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<meta name="keywords" content="C1866504, disease or syndrome, ercc2, ichthyosiform erythroderma with hair abnormality and mental and growth retardation, photosensitive trichothiodystrophies, photosensitive trichothiodystrophy, pibids syndrome, pibids syndromes, tay syndrome, trichothiodystrophies, photosensitive, trichothiodystrophy 1, photosensitive, trichothiodystrophy type f, trichothiodystrophy with congenital ichthyosis, trichothiodystrophy, photosensitive, trichothiodystrophy-sun sensitivity syndrome, ttd1, ttdp, autosomal dominant, autosomal recessive, birth defects, chromosomal disease, chromosome, clinical features, clinical findings, clinical genetics, clinical recommendations, clinvar, congenital chromosomal disease, consumer genetic resources, cytogenetic location, disease characteristics, disease definitions, disease descriptions, disease ontology, disease synonyms, disease vocabulary, dysmorphology, entrez, familial disease, gene, gene-disease relationship, genereviews, genetic disease, genetic disorder, genetic terminology, genetic testing registry, genetics home reference, genomic disease, gtr, hereditary disease, heritable disease, hpo, human phenotype ontology, inherited disease, management guidelines, maternal inheritance, medgen, medical genetics, medical subject headings, mesh, mitochondrial inheritance, mode of inheritance, national center for biotechnology information, national institutes of health, national library of medicine, ncbi, nih, nlm, omim, ordo, orphanet, paternal inheritance, phenome, position statements, professional practice guidelines, rare disease, reference sequence, refseq, snomed ct, syndrome, undiagnosed diseases, x-linked recessive" /><meta name="description" content="About half of all people with trichothiodystrophy have a photosensitive form of the disorder, which causes them to be extremely sensitive to ultraviolet (UV) rays from sunlight. They develop a severe sunburn after spending just a few minutes in the sun. However, for reasons that are unclear, they do not develop other sun-related problems such as excessive freckling of the skin or an increased risk of skin cancer. Many people with trichothiodystrophy report that they do not sweat.\n\nTrichothiodystrophy is also associated with recurrent infections, particularly respiratory infections, which can be life-threatening. People with trichothiodystrophy may have abnormal red blood cells, including red blood cells that are smaller than normal. They may also have elevated levels of a type of hemoglobin called A2, which is a protein found in red blood cells. Other features of trichothiodystrophy can include dry, scaly skin (ichthyosis); abnormalities of the fingernails and toenails; clouding of the lens in both eyes from birth (congenital cataracts); poor coordination; and skeletal abnormalities including degeneration of both hips at an early age.\n\nIntellectual disability and delayed development are common in people with trichothiodystrophy, although most affected individuals are highly social with an outgoing and engaging personality. Some people with trichothiodystrophy have brain abnormalities that can be seen with imaging tests. A common neurological feature of this disorder is impaired myelin production (dysmyelination). Myelin is a fatty substance that insulates nerve cells and promotes the rapid transmission of nerve impulses.\n\nMothers of children with trichothiodystrophy may experience problems during pregnancy including pregnancy-induced high blood pressure (preeclampsia) and a related condition called HELLP syndrome that can damage the liver. Babies with trichothiodystrophy are at increased risk of premature birth, low birth weight, and slow growth. Most children with trichothiodystrophy have short stature compared to others their age. \n\nThe signs and symptoms of trichothiodystrophy vary widely. Mild cases may involve only the hair. More severe cases also cause delayed development, significant intellectual disability, and recurrent infections; severely affected individuals may survive only into infancy or early childhood.\n\nIn people with trichothiodystrophy, tests show that the hair is lacking sulfur-containing proteins that normally gives hair its strength. A cross section of a cut hair shows alternating light and dark banding that has been described as a &quot;tiger tail.&quot;\n\nTrichothiodystrophy, commonly called TTD, is a rare inherited condition that affects many parts of the body. The hallmark of this condition is hair that is sparse and easily broken. " /><meta name="robots" content="index,nofollow,noarchive" />
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<title>Trichothiodystrophy 1, photosensitive (Concept Id: C1866504)
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<!--
UID=355730
ConceptID=C1866504
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Trichothiodystrophy 1, photosensitive<span class="h1sub">(TTD1)</span></div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355730</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information."><span class="highlight" style="background-color:">C1866504</span></a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonyms:</td>
<td>PIBIDS SYNDROME; TAY SYNDROME; TRICHOTHIODYSTROPHY WITH CONGENITAL ICHTHYOSIS; TTD1</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td><a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#target-gene-loc">Gene (location):<img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a><div class="display-none" id="target-gene-loc">
Gene(s) directly associated with<br />
this condition or phenotype.</div></td>
<td><a target="_blank" title="ERCC2 - ID: 2068 - NCBI Gene" href="/gene/2068" class="medgenPMinfo">ERCC2</a> (19q13.32)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>Monarch Initiative:</td>
<td><a href="https://monarchinitiative.org/disease/MONDO:0011125" target="_blank">MONDO:0011125</a></td></tr>
<tr><td>OMIM<span class="superscript">®</span>:</td>
<td><a href="https://omim.org/entry/601675" target="_blank">601675</a></td></tr>
<tr><td>Orphanet:</td>
<td><a target="_blank" title="Orphanet: The portal for rare diseases and orphan drugs" href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&amp;Expert=670">ORPHA670</a></td></tr></tbody></table></div><div class="rprt-body jig-ncbiinpagenav" data-jigconfig="smoothScroll: false, gotoTopLink: true, gotoTopLinkText: '', gotoTopLinkAttrs: {'title': 'Go to the top of the page'},allHeadingLevels: ['h1'], topOfPageTOC: true, tocId: 'my-toc'"><div id="rprt-tabs-1" class="rprt-tab"><div id="tb-termsProp-1"><div class="leftCol mgCol"><div>
<div class="portlet mgSection" id="ID_100">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Definition">Definition</h1><a sid="100" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">About half of all people with trichothiodystrophy have a photosensitive form of the disorder, which causes them to be extremely sensitive to ultraviolet (UV) rays from sunlight. They develop a severe sunburn after spending just a few minutes in the sun. However, for reasons that are unclear, they do not develop other sun-related problems such as excessive freckling of the skin or an increased risk of skin cancer. Many people with trichothiodystrophy report that they do not sweat.<br /><br />Trichothiodystrophy is also associated with recurrent infections, particularly respiratory infections, which can be life-threatening. People with trichothiodystrophy may have abnormal red blood cells, including red blood cells that are smaller than normal. They may also have elevated levels of a type of hemoglobin called A2, which is a protein found in red blood cells. Other features of trichothiodystrophy can include dry, scaly skin (ichthyosis); abnormalities of the fingernails and toenails; clouding of the lens in both eyes from birth (congenital cataracts); poor coordination; and skeletal abnormalities including degeneration of both hips at an early age.<br /><br />Intellectual disability and delayed development are common in people with trichothiodystrophy, although most affected individuals are highly social with an outgoing and engaging personality. Some people with trichothiodystrophy have brain abnormalities that can be seen with imaging tests. A common neurological feature of this disorder is impaired myelin production (dysmyelination). Myelin is a fatty substance that insulates nerve cells and promotes the rapid transmission of nerve impulses.<br /><br />Mothers of children with trichothiodystrophy may experience problems during pregnancy including pregnancy-induced high blood pressure (preeclampsia) and a related condition called HELLP syndrome that can damage the liver. Babies with trichothiodystrophy are at increased risk of premature birth, low birth weight, and slow growth. Most children with trichothiodystrophy have short stature compared to others their age. <br /><br />The signs and symptoms of trichothiodystrophy vary widely. Mild cases may involve only the hair. More severe cases also cause delayed development, significant intellectual disability, and recurrent infections; severely affected individuals may survive only into infancy or early childhood.<br /><br />In people with trichothiodystrophy, tests show that the hair is lacking sulfur-containing proteins that normally gives hair its strength. A cross section of a cut hair shows alternating light and dark banding that has been described as a "tiger tail."<br /><br />Trichothiodystrophy, commonly called TTD, is a rare inherited condition that affects many parts of the body. The hallmark of this condition is hair that is sparse and easily broken.  [from <a title="MedlinePlus Genetics" href="https://medlineplus.gov/genetics/" class="defSource" target="_blank">MedlinePlus Genetics</a>]</div>
</div>
<div class="portlet mgSection" id="ID_102">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Clinical_features">Clinical features</h1><a sid="102" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat"><strong>From HPO</strong><br />
<div class="divPopper rprt" id="clin_2874"><div><strong>Squamous cell carcinoma</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>2874</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0007137</a></dd><dt><span class="dotprefix"></span></dt><dd>Neoplastic Process</dd></dl></div></div></div>
<div class="spaceAbove">The presence of squamous cell carcinoma of the skin.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/2874">Feature record</a> | <a href="/medgen?term=%22Squamous%20cell%20carcinoma%22%5BClinical%20Features%5D%20OR%202874%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1648304"><div><strong>Skin basal cell carcinoma</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648304</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4721806</a></dd><dt><span class="dotprefix"></span></dt><dd>Neoplastic Process</dd></dl></div></div></div>
<div class="spaceAbove">The presence of a basal cell carcinoma of the skin.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648304">Feature record</a> | <a href="/medgen?term=%22Skin%20basal%20cell%20carcinoma%22%5BClinical%20Features%5D%20OR%201648304%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_65920"><div><strong>Small for gestational age</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>65920</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0235991</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Smaller than normal size according to sex and gestational age related norms, defined as a weight below the 10th percentile for the gestational age.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/65920">Feature record</a> | <a href="/medgen?term=%22Small%20for%20gestational%20age%22%5BClinical%20Features%5D%20OR%2065920%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_87607"><div><strong>Short stature</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>87607</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0349588</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A height below that which is expected according to age and gender norms. Although there is no universally accepted definition of short stature, many refer to "short stature" as height more than 2 standard deviations below the mean for age and gender (or below the 3rd percentile for age and gender dependent norms).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/87607">Feature record</a> | <a href="/medgen?term=%22Short%20stature%22%5BClinical%20Features%5D%20OR%2087607%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_43933"><div><strong>Intestinal obstruction</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>43933</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0021843</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Blockage or impairment of the normal flow of the contents of the intestine towards the anal canal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/43933">Feature record</a> | <a href="/medgen?term=%22Intestinal%20obstruction%22%5BClinical%20Features%5D%20OR%2043933%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_96036"><div><strong>Chronic diarrhea</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96036</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0401151</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">The presence of chronic diarrhea, which is usually taken to mean diarrhea that has persisted for over 4 weeks.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96036">Feature record</a> | <a href="/medgen?term=%22Chronic%20diarrhea%22%5BClinical%20Features%5D%20OR%2096036%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_811453"><div><strong>Malabsorption</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>811453</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3714745</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Impaired ability to absorb one or more nutrients from the intestine.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/811453">Feature record</a> | <a href="/medgen?term=%22Malabsorption%22%5BClinical%20Features%5D%20OR%20811453%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_488785"><div><strong>Macrotia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>488785</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0152421</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Median longitudinal ear length greater than two standard deviations above the mean and median ear width greater than two standard deviations above the mean (objective); or, apparent increase in length and width of the pinna (subjective).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/488785">Feature record</a> | <a href="/medgen?term=%22Macrotia%22%5BClinical%20Features%5D%20OR%20488785%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_343309"><div><strong>Protruding ear</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>343309</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855285</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Angle formed by the plane of the ear and the mastoid bone greater than the 97th centile for age (objective); or, outer edge of the helix more than 2 cm from the mastoid at the point of maximum distance (objective).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/343309">Feature record</a> | <a href="/medgen?term=%22Protruding%20ear%22%5BClinical%20Features%5D%20OR%20343309%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_43220"><div><strong>Photophobia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>43220</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0085636</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">Excessive sensitivity to light with the sensation of discomfort or pain in the eyes due to exposure to bright light.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/43220">Feature record</a> | <a href="/medgen?term=%22Photophobia%22%5BClinical%20Features%5D%20OR%2043220%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_105318"><div><strong>Delayed speech and language development</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>105318</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0454644</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A degree of language development that is significantly below the norm for a child of a specified age.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/105318">Feature record</a> | <a href="/medgen?term=%22Delayed%20speech%20and%20language%20development%22%5BClinical%20Features%5D%20OR%20105318%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_811461"><div><strong>Intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>811461</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3714756</a></dd><dt><span class="dotprefix"></span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual disability, previously referred to as mental retardation, is characterized by subnormal intellectual functioning that occurs during the developmental period. It is defined by an IQ score below 70.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/811461">Feature record</a> | <a href="/medgen?term=%22Intellectual%20disability%22%5BClinical%20Features%5D%20OR%20811461%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_19766"><div><strong>Retrognathia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>19766</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0035353</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">An abnormality in which the mandible is mislocalised posteriorly.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/19766">Feature record</a> | <a href="/medgen?term=%22Retrognathia%22%5BClinical%20Features%5D%20OR%2019766%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_69138"><div><strong>Absence of subcutaneous fat</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>69138</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0241267</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Lack of subcutaneous adipose tissue.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/69138">Feature record</a> | <a href="/medgen?term=%22Absence%20of%20subcutaneous%20fat%22%5BClinical%20Features%5D%20OR%2069138%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_83069"><div><strong>Flexion contracture</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>83069</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0333068</a></dd><dt><span class="dotprefix"></span></dt><dd>Anatomical Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">A flexion contracture is a bent (flexed) joint that cannot be straightened actively or passively. It is thus a chronic loss of joint motion due to structural changes in muscle, tendons, ligaments, or skin that prevents normal movement of joints.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/83069">Feature record</a> | <a href="/medgen?term=%22Flexion%20contracture%22%5BClinical%20Features%5D%20OR%2083069%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1644158"><div><strong>Microcephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1644158</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551563</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Head circumference below 2 standard deviations below the mean for age and gender.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1644158">Feature record</a> | <a href="/medgen?term=%22Microcephaly%22%5BClinical%20Features%5D%20OR%201644158%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_2109"><div><strong>Asthma</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>2109</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0004096</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Asthma is characterized by increased responsiveness of the tracheobronchial tree to multiple stimuli, leading to narrowing of the air passages with resultant dyspnea, cough, and wheezing.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/2109">Feature record</a> | <a href="/medgen?term=%22Asthma%22%5BClinical%20Features%5D%20OR%202109%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_3767"><div><strong>Erythroderma</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>3767</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0011606</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An inflammatory exfoliative dermatosis involving nearly all of the surface of the skin. Erythroderma develops suddenly. A patchy erythema may generalize and spread to affect most of the skin. Scaling may appear in 2-6 days and be accompanied by hot, red, dry skin, malaise, and fever.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/3767">Feature record</a> | <a href="/medgen?term=%22Erythroderma%22%5BClinical%20Features%5D%20OR%203767%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_9620"><div><strong>Keratoconjunctivitis sicca</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>9620</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0022575</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dryness of the eye related to deficiency of the tear film components (aqueous, mucin, or lipid), lid surface abnormalities, or epithelial abnormalities. Keratoconjunctivitis sicca often results in a scratchy or sandy sensation (foreign body sensation) in the eyes, and may also be associated with itching, inability to produce tears, photosensitivity, redness, pain, and difficulty in moving the eyelids.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/9620">Feature record</a> | <a href="/medgen?term=%22Keratoconjunctivitis%20sicca%22%5BClinical%20Features%5D%20OR%209620%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_65998"><div><strong>Recurrent infections</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>65998</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0239998</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Increased susceptibility to infections.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/65998">Feature record</a> | <a href="/medgen?term=%22Recurrent%20infections%22%5BClinical%20Features%5D%20OR%2065998%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1720114"><div><strong>Decreased circulating IgG concentration</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1720114</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5234937</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An abnormally decreased level of immunoglobulin G (IgG) in blood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1720114">Feature record</a> | <a href="/medgen?term=%22Decreased%20circulating%20IgG%20concentration%22%5BClinical%20Features%5D%20OR%201720114%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_336578"><div><strong>Triangular mouth</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>336578</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849341</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">The presence of a triangular form of the mouth.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/336578">Feature record</a> | <a href="/medgen?term=%22Triangular%20mouth%22%5BClinical%20Features%5D%20OR%20336578%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_343052"><div><strong>Short nose</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>343052</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854114</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Distance from nasion to subnasale more than two standard deviations below the mean, or alternatively, an apparently decreased length from the nasal root to the nasal tip.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/343052">Feature record</a> | <a href="/medgen?term=%22Short%20nose%22%5BClinical%20Features%5D%20OR%20343052%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_5272"><div><strong>Freckling</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>5272</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0016689</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">The presence of an increased number of freckles, small circular spots on the skin that are darker than the surrounding skin because of deposits of melanin.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/5272">Feature record</a> | <a href="/medgen?term=%22Freckling%22%5BClinical%20Features%5D%20OR%205272%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_21088"><div><strong>Telangiectasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>21088</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0039446</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Telangiectasias refer to small dilated blood vessels located near the surface of the skin or mucous membranes, measuring between 0.5 and 1 millimeter in diameter. Telangiectasia are located especially on the tongue, lips, palate, fingers, face, conjunctiva, trunk, nail beds, and fingertips.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/21088">Feature record</a> | <a href="/medgen?term=%22Telangiectasia%22%5BClinical%20Features%5D%20OR%2021088%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_38180"><div><strong>Congenital nonbullous ichthyosiform erythroderma</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>38180</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0079154</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The term collodion baby applies to newborns who appear to have an extra layer of skin (known as a collodion membrane) that has a collodion-like quality. It is a descriptive term, not a specific diagnosis or disorder (as such, it is a syndrome). Affected babies are born in a collodion membrane, a shiny waxy outer layer to the skin. This is shed 10-14 days after birth, revealing the main symptom of the disease, extensive scaling of the skin caused by hyperkeratosis. With increasing age, the scaling tends to be concentrated around joints in areas such as the groin, the armpits, the inside of the elbow and the neck. The scales often tile the skin and may resemble fish scales.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/38180">Feature record</a> | <a href="/medgen?term=%22Congenital%20nonbullous%20ichthyosiform%20erythroderma%22%5BClinical%20Features%5D%20OR%2038180%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_56250"><div><strong>Dry skin</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>56250</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0151908</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">Skin characterized by the lack of natural or normal moisture.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/56250">Feature record</a> | <a href="/medgen?term=%22Dry%20skin%22%5BClinical%20Features%5D%20OR%2056250%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_66368"><div><strong>Nail dystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>66368</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0221260</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Onychodystrophy (nail dystrophy) refers to nail changes apart from changes of the color (nail dyschromia) and involves partial or complete disruption of the various keratinous layers of the nail plate.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/66368">Feature record</a> | <a href="/medgen?term=%22Nail%20dystrophy%22%5BClinical%20Features%5D%20OR%2066368%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_82668"><div><strong>Trichorrhexis nodosa</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82668</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0263485</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Trichorrhexis nodosa is the formation of nodes along the hair shaft through which breakage readily occurs. It is thus a focal defect in the hair fiber that is characterized by thickening or weak points (nodes) that cause the hair to break off easily. The result is defective, abnormally fragile hair.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82668">Feature record</a> | <a href="/medgen?term=%22Trichorrhexis%20nodosa%22%5BClinical%20Features%5D%20OR%2082668%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_120480"><div><strong>Brittle hair</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120480</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0263490</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fragile, easily breakable hair, i.e., with reduced tensile strength.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120480">Feature record</a> | <a href="/medgen?term=%22Brittle%20hair%22%5BClinical%20Features%5D%20OR%20120480%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_82670"><div><strong>Pili torti</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82670</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0263491</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Pili (from Latin pilus, hair) torti (from Latin tortus, twisted) refers to short and brittle hairs that appear flattened and twisted when viewed through a microscope.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82670">Feature record</a> | <a href="/medgen?term=%22Pili%20torti%22%5BClinical%20Features%5D%20OR%2082670%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_537942"><div><strong>Small nail</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>537942</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0263523</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A nail that is diminished in length and width, i.e., underdeveloped nail.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/537942">Feature record</a> | <a href="/medgen?term=%22Small%20nail%22%5BClinical%20Features%5D%20OR%20537942%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_87601"><div><strong>Cutaneous photosensitivity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>87601</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0349506</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">An increased sensitivity of the skin to light. Photosensitivity may result in a rash upon exposure to the sun (which is known as photodermatosis). Photosensitivity can be diagnosed by phototests in which light is shone on small areas of skin.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/87601">Feature record</a> | <a href="/medgen?term=%22Cutaneous%20photosensitivity%22%5BClinical%20Features%5D%20OR%2087601%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_98401"><div><strong>Fine hair</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98401</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0423867</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Hair that is fine or thin to the touch.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98401">Feature record</a> | <a href="/medgen?term=%22Fine%20hair%22%5BClinical%20Features%5D%20OR%2098401%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_209030"><div><strong>Hyperkeratosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>209030</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0870082</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hyperkeratosis is thickening of the epidermis involving the outer layer of the skin, the stratum corneum, which is composed of large, polyhedral, plate-like envelopes filled with keratin which are the dead cells that have migrated up from the stratum granulosum.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/209030">Feature record</a> | <a href="/medgen?term=%22Hyperkeratosis%22%5BClinical%20Features%5D%20OR%20209030%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_698036"><div><strong>Trichoschisis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>698036</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1274711</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Transverse fractures through the hair shafts (trichoschisis). Trichoschisis is characterized by a sharp transverse fracture of the hair shaft.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/698036">Feature record</a> | <a href="/medgen?term=%22Trichoschisis%22%5BClinical%20Features%5D%20OR%20698036%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_341661"><div><strong>Fragile nails</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341661</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1856963</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Nails that easily break.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341661">Feature record</a> | <a href="/medgen?term=%22Fragile%20nails%22%5BClinical%20Features%5D%20OR%20341661%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_892884"><div><strong>Tiger tail banding</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>892884</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4073178</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An abnormal appearance of hair under polarizing microscopy (using crossed polarizers), whereby hair shafts show striking alternating bright and dark bands, often referred to as tiger tail banding.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/892884">Feature record</a> | <a href="/medgen?term=%22Tiger%20tail%20banding%22%5BClinical%20Features%5D%20OR%20892884%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1790211"><div><strong>Sparse hair</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1790211</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5551005</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Reduced density of hairs.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1790211">Feature record</a> | <a href="/medgen?term=%22Sparse%20hair%22%5BClinical%20Features%5D%20OR%201790211%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_5711"><div><strong>Hypogonadism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>5711</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0020619</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A decreased functionality of the gonad.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/5711">Feature record</a> | <a href="/medgen?term=%22Hypogonadism%22%5BClinical%20Features%5D%20OR%205711%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_10033"><div><strong>Microphthalmia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>10033</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0026010</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Microphthalmia is an eye abnormality that arises before birth. In this condition, one or both eyeballs are abnormally small. In some affected individuals, the eyeball may appear to be completely missing; however, even in these cases some remaining eye tissue is generally present. Such severe microphthalmia should be distinguished from another condition called anophthalmia, in which no eyeball forms at all. However, the terms anophthalmia and severe microphthalmia are often used interchangeably. Microphthalmia may or may not result in significant vision loss.\n\nPeople with microphthalmia may also have a condition called coloboma. Colobomas are missing pieces of tissue in structures that form the eye. They may appear as notches or gaps in the colored part of the eye called the iris; the retina, which is the specialized light-sensitive tissue that lines the back of the eye; the blood vessel layer under the retina called the choroid; or in the optic nerves, which carry information from the eyes to the brain. Colobomas may be present in one or both eyes and, depending on their size and location, can affect a person's vision.\n\nPeople with microphthalmia may also have other eye abnormalities, including clouding of the lens of the eye (cataract) and a narrowed opening of the eye (narrowed palpebral fissure). Additionally, affected individuals may have an abnormality called microcornea, in which the clear front covering of the eye (cornea) is small and abnormally curved.\n\nBetween one-third and one-half of affected individuals have microphthalmia as part of a syndrome that affects other organs and tissues in the body. These forms of the condition are described as syndromic. When microphthalmia occurs by itself, it is described as nonsyndromic or isolated.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/10033">Feature record</a> | <a href="/medgen?term=%22Microphthalmia%22%5BClinical%20Features%5D%20OR%2010033%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_45166"><div><strong>Nystagmus</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>45166</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0028738</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/45166">Feature record</a> | <a href="/medgen?term=%22Nystagmus%22%5BClinical%20Features%5D%20OR%2045166%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_21337"><div><strong>Strabismus</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>21337</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0038379</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/21337">Feature record</a> | <a href="/medgen?term=%22Strabismus%22%5BClinical%20Features%5D%20OR%2021337%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_39462"><div><strong>Cataract</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>39462</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0086543</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A cataract is an opacity or clouding that develops in the crystalline lens of the eye or in its capsule.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/39462">Feature record</a> | <a href="/medgen?term=%22Cataract%22%5BClinical%20Features%5D%20OR%2039462%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_78610"><div><strong>Microcornea</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78610</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0266544</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">A congenital abnormality of the cornea in which the cornea and the anterior segment of the eye are smaller than normal. The horizontal diameter of the cornea does not reach 10 mm even in adulthood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78610">Feature record</a> | <a href="/medgen?term=%22Microcornea%22%5BClinical%20Features%5D%20OR%2078610%5Buid%5D">Search on this feature</a></div></div><div class="TreeLite" data-jigconfig="closed: 1"><div class="concept-def"><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().openAll(); return false;">Show all</a><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().closeAll(); return false;">Hide all</a></div><ul><li><span class="TLline">Abnormality of head or neck</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_343052" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Short nose</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_336578" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Triangular mouth</a></span></li></ul></li><li><span class="TLline">Abnormality of the digestive system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_96036" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chronic diarrhea</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_43933" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intestinal obstruction</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_811453" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Malabsorption</a></span></li></ul></li><li><span class="TLline">Abnormality of the endocrine system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_5711" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypogonadism</a></span></li></ul></li><li><span class="TLline">Abnormality of the eye</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_39462" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cataract</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_78610" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcornea</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_10033" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microphthalmia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_45166" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nystagmus</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_21337" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Strabismus</a></span></li></ul></li><li><span class="TLline">Abnormality of the immune system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_2109" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Asthma</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1720114" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Decreased circulating IgG concentration</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_3767" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Erythroderma</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_9620" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Keratoconjunctivitis sicca</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_65998" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Recurrent infections</a></span></li></ul></li><li><span class="TLline">Abnormality of the integument</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_120480" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Brittle hair</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_38180" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital nonbullous ichthyosiform erythroderma</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_87601" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cutaneous photosensitivity</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_56250" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dry skin</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_98401" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fine hair</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_341661" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fragile nails</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_5272" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Freckling</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_209030" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperkeratosis</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_66368" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nail dystrophy</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_82670" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pili torti</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_537942" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Small nail</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1790211" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sparse hair</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_21088" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Telangiectasia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_892884" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tiger tail banding</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_82668" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichorrhexis nodosa</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_698036" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichoschisis</a></span></li></ul></li><li><span class="TLline">Abnormality of the musculoskeletal system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_69138" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Absence of subcutaneous fat</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_83069" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Flexion contracture</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1644158" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_19766" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Retrognathia</a></span></li></ul></li><li><span class="TLline">Abnormality of the nervous system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_105318" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Delayed speech and language development</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_811461" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_43220" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Photophobia</a></span></li></ul></li><li><span class="TLline">Ear malformation</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_488785" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Macrotia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_343309" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Protruding ear</a></span></li></ul></li><li><span class="TLline">Growth abnormality</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_87607" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Short stature</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_65920" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Small for gestational age</a></span></li></ul></li><li><span class="TLline">Neoplasm</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1648304" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Skin basal cell carcinoma</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_2874" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Squamous cell carcinoma</a></span></li></ul></li></ul></div></div>
</div>
<div class="portlet mgSection" id="ID_118">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Term_Hierarchy">Term Hierarchy</h1><a sid="118" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln HierarchyGTR"><div class="jig-ncbitabs"><ul><li><a href="#tabGTR">GTR</a></li><li><a href="#tabMGEN">MeSH</a></li></ul><div id="tabGTR"><div class="search_result"><div class="rprts"><div class="chiclet_legend"><span class="chiclet_list" style="position:static;"><span title="Clinical test" class="chiclet Ccolor round">C</span><span>Clinical test,  </span><span title="Research test" class="chiclet Rcolor round">R</span><span>Research test,  </span><span title="OMIM" class="chiclet Ocolor ">O</span><span>OMIM,  </span><span title="GeneReview" class="chiclet Gcolor">G</span><span><em>GeneReviews</em>,  </span><span title="ClinVar" class="chiclet Vcolor">V</span><span>ClinVar  </span></span></div><div id="hierarchy" class="margin_t1"><div class="ds_tree"><ul><li class="matched_ds"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C1866504[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=355730">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=355730" target="_blank" href="/omim/126340">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=355730" ref="ncbi_uid=355730">V</a></span></span><span class="TLline">Trichothiodystrophy 1, photosensitive</span></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/1842738" ref="tree=MeSH" title="MedGen record for Autosomal ichthyosis syndrome with prominent hair abnormalities">Autosomal ichthyosis syndrome with prominent hair abnormalities</a></span><ul><li><span class="TLline"><a href="/medgen/363064" ref="tree=MeSH" title="MedGen record for Trichothiodystrophy">Trichothiodystrophy</a></span><ul><li><span class="matched_ds">Trichothiodystrophy 1, photosensitive</span></li></ul></li></ul></li></ul></div></div></div></div>
</div>
<div class="portlet mgSection" id="ID_105">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Professional_guidelines">Professional guidelines</h1><a sid="105" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">PubMed<a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#guidelinesHelpPM"><img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a></h3>
<div class="nl"><a target="_blank" href="/pubmed/31903518">Abnormal Newborn Screening Follow-up for Severe Combined Immunodeficiency in an Amish Cohort with Cartilage-Hair Hypoplasia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Scott EM,
Chandra S,
Li J,
Robinette ED,
Brown MF,
Wenger OK</span><br />
<span class="medgenPMjournal">J Clin Immunol</span>
2020 Feb;40(2):321-328.
Epub 2020 Jan 6
doi: 10.1007/s10875-019-00739-9.
<span class="bold">PMID: </span><a href="/pubmed/31903518" target="_blank">31903518</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28925637">Hair Loss: Common Causes and Treatment.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Phillips TG,
Slomiany WP,
Allison R</span><br />
<span class="medgenPMjournal">Am Fam Physician</span>
2017 Sep 15;96(6):371-378.
<span class="bold">PMID: </span><a href="/pubmed/28925637" target="_blank">28925637</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28913623">Updated strategies for the management, pathogenesis and molecular genetics of different forms of ichthyosis syndromes with prominent hair abnormalities.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rasheed M,
Shahzad S,
Zaeem A,
Afzal I,
Gul A,
Khalid S</span><br />
<span class="medgenPMjournal">Arch Dermatol Res</span>
2017 Dec;309(10):773-785.
Epub 2017 Sep 14
doi: 10.1007/s00403-017-1780-x.
<span class="bold">PMID: </span><a href="/pubmed/28913623" target="_blank">28913623</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(trichothiodystrophy%201%2C%20photosensitive)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">See all (5)</a></div></div>
</div>
<div class="display-none help-popup" id="guidelinesHelpPM">These guidelines are articles in PubMed that match specific search criteria developed by MedGen to capture the most relevant practice guidelines. This list may not be comprehensive and may include broader topics as well. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div><div class="display-none help-popup" id="guidelinesHelpCurated">These guidelines are manually curated by the MedGen team
to supplement articles available in PubMed. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div>
<div class="portlet mgSection" id="ID_103">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_clinical_studies">Recent clinical studies</h1><a sid="103" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">Etiology</h3>
<div class="nl"><a target="_blank" href="/pubmed/35615778">Trichothiodystrophy hair shafts display distinct ultrastructural features.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ioannidis AD,
Khan SG,
Tamura D,
DiGiovanna JJ,
Rizza E,
Kraemer KH,
Rice RH</span><br />
<span class="medgenPMjournal">Exp Dermatol</span>
2022 Aug;31(8):1270-1275.
Epub 2022 Jun 13
doi: 10.1111/exd.14614.
<span class="bold">PMID: </span><a href="/pubmed/35615778" target="_blank">35615778</a><a href="/pmc/articles/PMC10575343" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30580289">PIBIDS syndrome in two Brazilian siblings.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Abagge KT,
Haupenthal F,
Felber GY,
Raskin S</span><br />
<span class="medgenPMjournal">BMJ Case Rep</span>
2018 Dec 22;11(1)
doi: 10.1136/bcr-2017-223744.
<span class="bold">PMID: </span><a href="/pubmed/30580289" target="_blank">30580289</a><a href="/pmc/articles/PMC6307604" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23419760">Ichthyosis in the newborn.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Craiglow BG</span><br />
<span class="medgenPMjournal">Semin Perinatol</span>
2013 Feb;37(1):26-31.
doi: 10.1053/j.semperi.2012.11.001.
<span class="bold">PMID: </span><a href="/pubmed/23419760" target="_blank">23419760</a><a href="/pmc/articles/PMC3758581" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/19153657">DNA repair in mammalian cells : Nucleotide excision repair: variations on versatility.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nouspikel T</span><br />
<span class="medgenPMjournal">Cell Mol Life Sci</span>
2009 Mar;66(6):994-1009.
doi: 10.1007/s00018-009-8737-y.
<span class="bold">PMID: </span><a href="/pubmed/19153657" target="_blank">19153657</a><a href="/pmc/articles/PMC11131503" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/12609773">Xeroderma pigmentosum.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Norgauer J,
Idzko M,
Panther E,
Hellstern O,
Herouy Y</span><br />
<span class="medgenPMjournal">Eur J Dermatol</span>
2003 Jan-Feb;13(1):4-9.
<span class="bold">PMID: </span><a href="/pubmed/12609773" target="_blank">12609773</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Trichothiodystrophy%201%2C%20photosensitive%22%20AND%20Etiology%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (88)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/37342013">Trichothiodystrophy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Garon L,
Kokta V,
Coulombe J</span><br />
<span class="medgenPMjournal">JAMA Dermatol</span>
2023 Aug 1;159(8):877.
doi: 10.1001/jamadermatol.2023.0913.
<span class="bold">PMID: </span><a href="/pubmed/37342013" target="_blank">37342013</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28925637">Hair Loss: Common Causes and Treatment.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Phillips TG,
Slomiany WP,
Allison R</span><br />
<span class="medgenPMjournal">Am Fam Physician</span>
2017 Sep 15;96(6):371-378.
<span class="bold">PMID: </span><a href="/pubmed/28925637" target="_blank">28925637</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26945533">Inherited ichthyosis: Syndromic forms.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Yoneda K</span><br />
<span class="medgenPMjournal">J Dermatol</span>
2016 Mar;43(3):252-63.
doi: 10.1111/1346-8138.13284.
<span class="bold">PMID: </span><a href="/pubmed/26945533" target="_blank">26945533</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26903188">Ocular manifestations of genetic skin disorders.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Jen M,
Nallasamy S</span><br />
<span class="medgenPMjournal">Clin Dermatol</span>
2016 Mar-Apr;34(2):242-75.
Epub 2015 Dec 2
doi: 10.1016/j.clindermatol.2015.11.008.
<span class="bold">PMID: </span><a href="/pubmed/26903188" target="_blank">26903188</a></div>
<div class="nl"><a target="_blank" href="/pubmed/12609773">Xeroderma pigmentosum.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Norgauer J,
Idzko M,
Panther E,
Hellstern O,
Herouy Y</span><br />
<span class="medgenPMjournal">Eur J Dermatol</span>
2003 Jan-Feb;13(1):4-9.
<span class="bold">PMID: </span><a href="/pubmed/12609773" target="_blank">12609773</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Trichothiodystrophy%201%2C%20photosensitive%22%20AND%20Diagnosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (86)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/38627102">Dupilumab treatment of trichothiodystrophy in a child.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Magnaterra E,
Giovannini M,
Filippeschi C,
Pedaci FA,
Tronconi G,
Callea M,
Ricci S,
Mori F,
Parpagnoli M,
Oranges T</span><br />
<span class="medgenPMjournal">Pediatr Dermatol</span>
2024 Sep-Oct;41(5):881-883.
Epub 2024 Apr 16
doi: 10.1111/pde.15612.
<span class="bold">PMID: </span><a href="/pubmed/38627102" target="_blank">38627102</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33955026">Successful treatment of trichothiodystrophy with dupilumab.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gruber R,
Zschocke A,
Zellner H,
Schmuth M</span><br />
<span class="medgenPMjournal">Clin Exp Dermatol</span>
2021 Oct;46(7):1381-1383.
Epub 2021 May 6
doi: 10.1111/ced.14642.
<span class="bold">PMID: </span><a href="/pubmed/33955026" target="_blank">33955026</a><a href="/pmc/articles/PMC8518772" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27294439">Nucleotide Excision Repair and Transcriptional Regulation: TFIIH and Beyond.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Compe E,
Egly JM</span><br />
<span class="medgenPMjournal">Annu Rev Biochem</span>
2016 Jun 2;85:265-90.
doi: 10.1146/annurev-biochem-060815-014857.
<span class="bold">PMID: </span><a href="/pubmed/27294439" target="_blank">27294439</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26370652">Ethnic hair disorders.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Lindsey SF,
Tosti A</span><br />
<span class="medgenPMjournal">Curr Probl Dermatol</span>
2015;47:139-49.
Epub 2015 Feb 20
doi: 10.1159/000369414.
<span class="bold">PMID: </span><a href="/pubmed/26370652" target="_blank">26370652</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25534312">Molecular regulation of UV-induced DNA repair.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Shah P,
He YY</span><br />
<span class="medgenPMjournal">Photochem Photobiol</span>
2015 Mar-Apr;91(2):254-64.
Epub 2015 Jan 14
doi: 10.1111/php.12406.
<span class="bold">PMID: </span><a href="/pubmed/25534312" target="_blank">25534312</a><a href="/pmc/articles/PMC4355264" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Trichothiodystrophy%201%2C%20photosensitive%22%20AND%20Therapy%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (20)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/31803976">ERCC2 mutations in two siblings with a severe trichothiodystrophy phenotype.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Leemans G,
De Raeve L,
Keymolen K</span><br />
<span class="medgenPMjournal">J Eur Acad Dermatol Venereol</span>
2020 Apr;34(4):876-879.
Epub 2020 Jan 6
doi: 10.1111/jdv.16134.
<span class="bold">PMID: </span><a href="/pubmed/31803976" target="_blank">31803976</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26584695">Developmental Delays, Fragile Hair, and Ichthyosis Since Infancy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Dasgupta TS,
Evans NS,
Cusack CA</span><br />
<span class="medgenPMjournal">Pediatr Dermatol</span>
2015 Nov-Dec;32(6):865-6.
doi: 10.1111/pde.12636.
<span class="bold">PMID: </span><a href="/pubmed/26584695" target="_blank">26584695</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21959366">Ocular manifestations of trichothiodystrophy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Brooks BP,
Thompson AH,
Clayton JA,
Chan CC,
Tamura D,
Zein WM,
Blain D,
Hadsall C,
Rowan J,
Bowles KE,
Khan SG,
Ueda T,
Boyle J,
Oh KS,
DiGiovanna JJ,
Kraemer KH</span><br />
<span class="medgenPMjournal">Ophthalmology</span>
2011 Dec;118(12):2335-42.
Epub 2011 Sep 28
doi: 10.1016/j.ophtha.2011.05.036.
<span class="bold">PMID: </span><a href="/pubmed/21959366" target="_blank">21959366</a><a href="/pmc/articles/PMC3230678" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/19085937">Genotype-phenotype relationships in trichothiodystrophy patients with novel splicing mutations in the XPD gene.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Botta E,
Nardo T,
Orioli D,
Guglielmino R,
Ricotti R,
Bondanza S,
Benedicenti F,
Zambruno G,
Stefanini M</span><br />
<span class="medgenPMjournal">Hum Mutat</span>
2009 Mar;30(3):438-45.
doi: 10.1002/humu.20912.
<span class="bold">PMID: </span><a href="/pubmed/19085937" target="_blank">19085937</a></div>
<div class="nl"><a target="_blank" href="/pubmed/9229111">DNA helicases in inherited human disorders.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ellis NA</span><br />
<span class="medgenPMjournal">Curr Opin Genet Dev</span>
1997 Jun;7(3):354-63.
doi: 10.1016/s0959-437x(97)80149-9.
<span class="bold">PMID: </span><a href="/pubmed/9229111" target="_blank">9229111</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Trichothiodystrophy%201%2C%20photosensitive%22%20AND%20Prognosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (11)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/37800682">Trichothiodystrophy-associated MPLKIP maintains DBR1 levels for proper lariat debranching and ectodermal differentiation.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Theil AF,
Pines A,
Kalayci T,
Heredia-Genestar JM,
Raams A,
Rietveld MH,
Sridharan S,
Tanis SE,
Mulder KW,
Büyükbabani N,
Karaman B,
Uyguner ZO,
Kayserili H,
Hoeijmakers JH,
Lans H,
Demmers JA,
Pothof J,
Altunoglu U,
El Ghalbzouri A,
Vermeulen W</span><br />
<span class="medgenPMjournal">EMBO Mol Med</span>
2023 Nov 8;15(11):e17973.
Epub 2023 Oct 6
doi: 10.15252/emmm.202317973.
<span class="bold">PMID: </span><a href="/pubmed/37800682" target="_blank">37800682</a><a href="/pmc/articles/PMC10630875" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30201151">Trichoscopy in Hair Shaft Disorders.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rudnicka L,
Olszewska M,
Waśkiel A,
Rakowska A</span><br />
<span class="medgenPMjournal">Dermatol Clin</span>
2018 Oct;36(4):421-430.
Epub 2018 Aug 16
doi: 10.1016/j.det.2018.05.009.
<span class="bold">PMID: </span><a href="/pubmed/30201151" target="_blank">30201151</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26370644">Hair loss in children.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Alves R,
Grimalt R</span><br />
<span class="medgenPMjournal">Curr Probl Dermatol</span>
2015;47:55-66.
Epub 2015 Feb 20
doi: 10.1159/000369405.
<span class="bold">PMID: </span><a href="/pubmed/26370644" target="_blank">26370644</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25340339">Dynamic partnership between TFIIH, PGC-1α and SIRT1 is impaired in trichothiodystrophy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Traboulsi H,
Davoli S,
Catez P,
Egly JM,
Compe E</span><br />
<span class="medgenPMjournal">PLoS Genet</span>
2014 Oct;10(10):e1004732.
Epub 2014 Oct 23
doi: 10.1371/journal.pgen.1004732.
<span class="bold">PMID: </span><a href="/pubmed/25340339" target="_blank">25340339</a><a href="/pmc/articles/PMC4207666" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/9229111">DNA helicases in inherited human disorders.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ellis NA</span><br />
<span class="medgenPMjournal">Curr Opin Genet Dev</span>
1997 Jun;7(3):354-63.
doi: 10.1016/s0959-437x(97)80149-9.
<span class="bold">PMID: </span><a href="/pubmed/9229111" target="_blank">9229111</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Trichothiodystrophy%201%2C%20photosensitive%22%20AND%20Clinical%20prediction%20guides%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (34)</a></div></div>
</div>
<div class="portlet mgSection" id="ID_104">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_systematic_reviews">Recent systematic reviews</h1><a sid="104" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">
<div class="nl"><a target="_blank" href="/pubmed/18603627">Trichothiodystrophy: a systematic review of 112 published cases characterises a wide spectrum of clinical manifestations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Faghri S,
Tamura D,
Kraemer KH,
Digiovanna JJ</span><br />
<span class="medgenPMjournal">J Med Genet</span>
2008 Oct;45(10):609-21.
Epub 2008 Jun 25
doi: 10.1136/jmg.2008.058743.
<span class="bold">PMID: </span><a href="/pubmed/18603627" target="_blank">18603627</a><a href="/pmc/articles/PMC3459585" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Trichothiodystrophy%201%2C%20photosensitive%22%20AND%20systematic%5Bsb%5D%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (1)</a></div></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Table_of_contents">Table of contents</h1><a sid="113" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul id="my-toc"></ul></div>
</div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Genetic_Testing_Registry">Genetic Testing Registry</h1><a sid="106" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C1866504%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (34)</a></li>
<li><a href="/gtr/tests?term=C1866504%5bDISCUI%5d&amp;filter=method%3A2%5F12" target="_blank">Microsatellite instability testing (MSI) (1)</a></li>
<li><a href="/gtr/tests?term=C1866504%5bDISCUI%5d&amp;filter=method%3A2%5F18" target="_blank">Mutation scanning of select exons (1)</a></li>
<li><a href="/gtr/tests?term=C1866504%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (40)</a></li>
<li><a href="/gtr/tests?term=C1866504%5bDISCUI%5d&amp;filter=method%3A2%5F19" target="_blank">Targeted variant analysis (7)</a></li>
<li class="portletSeeAll portletSeeAllPad"><total><a href="/gtr/tests?term=C1866504%5bDISCUI%5d" target="_blank">See all (46)</a></total></li>
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<div class="portlet_content ln"><ul><li><a href="https://www.omim.org/search?index=entry&amp;start=1&amp;limit=10&amp;sort=score%20desc&amp;field=number&amp;search=601675" target="_blank">OMIM</a></li><li><a href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Expert=670" target="_blank">Orphanet</a></li><li><a href="https://clinicaltrials.gov/search?cond=Trichothiodystrophy%201,%20photosensitive" target="_blank">ClinicalTrials.gov</a></li></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Practice_guidelines">Practice guidelines</h1><a sid="121" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul class="a_poppers"><li><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(trichothiodystrophy%201%2C%20photosensitive)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">PubMed</a><div class="help-popup">See practice and clinical guidelines in PubMed. The search results may include broader topics and may not capture all published guidelines. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div></li><li><a target="_blank" href="/books/?term=((%22clinical%20guidelines%22%5BResource%20Type%5D)%20OR%20%22practice%20guideline%22%5BPublication%20Type%5D)%20AND%20(%22Trichothiodystrophy%201%2C%20photosensitive%22)">Bookshelf</a><div class="help-popup">See practice and clinical guidelines in NCBI Bookshelf. The search results may include broader topics and may not capture all published guidelines. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div></li></ul></div>
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<div class="portlet_content ln"><ul><li><a href="http://www.omim.org/search?index=entry&amp;start=1&amp;limit=10&amp;sort=score%20desc&amp;field=number&amp;search=126340" target="_blank">OMIM</a></li><li><a href="/clinvar/?term=2068[geneid]" target="_blank">View ERCC2 variations in ClinVar</a></li><li><a href="/nuccore/214830821" target="_blank">RefSeqGene</a></li><li><a href="https://catalog.coriell.org/Search?q=601675" target="_blank">Coriell Institute for Medical Research</a></li></ul></div>
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<div class="portlet_content ln"><ul><li><a href="https://www.malacards.org/card/trichothiodystrophy_1_photosensitive" target="_blank">MalaCards</a></li><li><a href="https://vsearch.nlm.nih.gov/vivisimo/cgi-bin/query-meta?v:project=medlineplus&amp;query=Trichothiodystrophy%201,%20photosensitive" target="_blank">MedlinePlus</a></li><li><a href="https://medlineplus.gov/genetics/condition/trichothiodystrophy" target="_blank">MedlinePlusGenetics (GHR)</a></li><li><a href="https://rarediseases.info.nih.gov/diseases/5270/disease" target="_blank">NCATS Office of Rare Diseases Research (GARD)</a></li></ul></div>
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<h3>Reviews</h3>
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<a class="brieflinkpopperctrl" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=355730" ref="log$=recordlinks">ClinVar</a>
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<a class="brieflinkpopperctrl" href="/gene?LinkName=medgen_gene_diseases&amp;from_uid=355730" ref="log$=recordlinks">Gene</a>
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<a class="brieflinkpopperctrl" href="/gtr/tests?term=C1866504[DISCUI]" ref="log$=recordlinks">GTR</a>
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<a class="brieflinkpopperctrl" href="/pmc?LinkName=medgen_pmc&amp;from_uid=355730" ref="log$=recordlinks">PMC Articles</a>
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<a class="brieflinkpopperctrl" href="/pubmed?LinkName=medgen_pubmed_omim&amp;from_uid=355730" ref="log$=recordlinks">PubMed (OMIM)</a>
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<a class="htb ralinkpopperctrl" ref="log$=activity&amp;linkpos=1" href="/portal/utils/pageresolver.fcgi?recordid=67cc50e384f3725e59fe8776">Trichothiodystrophy 1, photosensitive</a>
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<a class="htb ralinkpopperctrl" ref="log$=activity&amp;linkpos=2" href="/portal/utils/pageresolver.fcgi?recordid=67cc50e1b15b832ebcbac4d9">C1860823[trait identifier] AND "Fulgent Genetics, Fulgent Genetic... <span class="number">(3)</span></a>
<div class="ralinkpop offscreen_noflow">C1860823[trait identifier] AND "Fulgent Genetics, Fulgent Genetics"[submitter]<div class="brieflinkpopdesc">Search</div></div>
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<a class="htb ralinkpopperctrl" ref="log$=activity&amp;linkpos=4" href="/portal/utils/pageresolver.fcgi?recordid=67cc50e0f4a390645e063920">C0432233[trait identifier] AND "Fulgent Genetics, Fulgent Genetic... <span class="number">(3)</span></a>
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