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<meta name="keywords" content="C0334013, disease or syndrome, follicular hyperkeratosis, hyperkeratosis follicularis, phrynoderma, 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="A skin condition characterized by excessive development of keratin in hair follicles, resulting in rough, cone-shaped, elevated papules resulting from closure of hair follicles with a white plug of sebum." /><meta name="robots" content="index,nofollow,noarchive" />
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<!--
UID=83101
ConceptID=C0334013
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Phrynoderma</div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>83101</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.">C0334013</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonym:</td>
<td>Follicular hyperkeratosis</td></tr>
<tr><td><span class="bold">SNOMED CT: </span></td>
<td>Follicular hyperkeratosis (81845009); Phrynoderma (238629004)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>HPO:</td>
<td><a target="_blank" title="Human Phenotype Ontology" href="https://hpo.jax.org/app/browse/term/HP:0007502">HP:0007502</a></td></tr>
<tr><td>Monarch Initiative:</td>
<td><a href="https://monarchinitiative.org/disease/MONDO:0400004" target="_blank">MONDO:0400004</a></td></tr>
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<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">A skin condition characterized by excessive development of keratin in hair follicles, resulting in rough, cone-shaped, elevated papules resulting from closure of hair follicles with a white plug of sebum. [from <a title="Human Phenotype Ontology" href="http://www.human-phenotype-ontology.org" class="defSource" target="_blank">HPO</a>]</div>
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<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=C0334013[DISCUI]&amp;test_type=Clinical&amp;redirect=true" ref="ncbi_uid=83101">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet unavailable" title="ClinVar">V</span></span><span class="TLline">Phrynoderma</span></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/871273" ref="tree=MeSH" title="MedGen record for Abnormality of the integument">Abnormality of the integument</a></span><ul><li><span class="TLline"><a href="/medgen/1845238" ref="tree=MeSH" title="MedGen record for Abnormality of the skin">Abnormality of the skin</a></span><ul><li><span class="TLline"><a href="/medgen/869110" ref="tree=MeSH" title="MedGen record for Abnormal skin morphology">Abnormal skin morphology</a></span><ul><li><span class="TLline"><a href="/medgen/66024" ref="tree=MeSH" title="MedGen record for Thickened skin">Thickened skin</a></span><ul><li><span class="TLline"><a href="/medgen/775751" ref="tree=MeSH" title="MedGen record for Epidermal thickening">Epidermal thickening</a></span><ul><li><span class="TLline"><a href="/medgen/209030" ref="tree=MeSH" title="MedGen record for Hyperkeratosis">Hyperkeratosis</a></span><ul><li><span class="matched_ds">Phrynoderma</span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></div></div></div></div>
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<div class="portlet mgSection" id="ID_112">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Conditions_with_this_feature">Conditions with this feature</h1><a sid="112" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat">
<div class="divPopper rprt" id="rdis_75672"><div><strong>Ehlers-Danlos syndrome, kyphoscoliotic type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75672</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:">C0268342</span></a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PLOD1-related kyphoscoliotic Ehlers-Danlos syndrome (PLOD1-kEDS) is characterized by hypotonia, generalized joint hypermobility, early-onset kyphoscoliosis, skin fragility, and ocular abnormality. Intelligence is normal. Life span may be normal, but affected individuals are at risk of life-threatening arterial ruptures and spontaneous dissections of medium-sized arteries. Adults with severe kyphoscoliosis are at risk for complications from restrictive lung disease, recurrent pneumonia, and cardiac failure.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75672">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98046"><div><strong>Ullrich congenital muscular dystrophy 1A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98046</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.">C0410179</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Collagen VI-related dystrophies (COL6-RDs) represent a continuum of overlapping clinical phenotypes with Bethlem muscular dystrophy at the milder end, Ullrich congenital muscular dystrophy (UCMD) at the more severe end, and a phenotype in between UCMD and Bethlem muscular dystrophy, referred to as intermediate COL6-RD. Bethlem muscular dystrophy is characterized by a combination of proximal muscle weakness and joint contractures. Hypotonia and delayed motor milestones occur in early childhood; mild hypotonia and weakness may be present congenitally. By adulthood, there is evidence of proximal weakness and contractures of the elbows, Achilles tendons, and long finger flexors. The progression of weakness is slow, and more than two thirds of affected individuals older than age 50 years remain independently ambulatory indoors, while relying on supportive means for mobility outdoors. Respiratory involvement is not a consistent feature. UCMD is characterized by congenital weakness, hypotonia, proximal joint contractures, and striking hyperlaxity of distal joints. Decreased fetal movements are frequently reported. Some affected children acquire the ability to walk independently; however, progression of the disease results in a loss of ambulation by age ten to eleven years. Early and severe respiratory insufficiency occurs in all individuals, resulting in the need for nocturnal noninvasive ventilation (NIV) in the form of bilevel positive airway pressure (BiPAP) by age 11 years. Intermediate COL6-RD is characterized by independent ambulation past age 11 years and respiratory insufficiency that is later in onset than in UCMD and results in the need for NIV in the form of BiPAP by the late teens to early 20s. In contrast to individuals with Bethlem muscular dystrophy, those with intermediate COL6-RD typically do not achieve the ability to run, jump, or climb stairs without use of a railing.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98046">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208666"><div><strong>Odonto-onycho-dermal dysplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208666</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.">C0796093</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Odontoonychodermal dysplasia (OODD) is an autosomal recessive disorder characterized by dry hair, severe hypodontia, smooth tongue with marked reduction of fungiform and filiform papillae, onychodysplasia, hyperkeratosis of the palms and soles, hypo- and hyperhidrosis of the skin, and atrophic patches on the face (summary by Adaimy et al., 2007; Yu et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208666">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_220887"><div><strong>Hereditary mucoepithelial dysplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>220887</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.">C1274795</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary mucoepithelial dysplasia (HMD) is a rare autosomal dominant genodermatosis characterized by onset in infancy of a panepithelial defect involving the oral, nasal, conjunctival, vaginal, cervical, perineal, urethral, and bladder mucosa. Patients develop cataracts, blindness, nonscarring alopecia, perineal psoriasiform lesions, and follicular keratoses (Witkop et al., 1982). Although 1 family was reported to have progressive severe interstitial lung disease (Witkop et al., 1979), this feature has not been reported in other families and is not considered a criterion for diagnosis. However, the clinical triad of nonscarring alopecia, well-demarcated fiery red mucosa, and psoriasiform perineal involvement has been consistently observed (review by Boralevi et al., 2005).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/220887">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_353335"><div><strong>Pachyonychia congenita 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>353335</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.">C1706595</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pachyonychia congenita (PC) is characterized by hypertrophic nail dystrophy, painful palmoplantar keratoderma and blistering, oral leukokeratosis, pilosebaceous cysts (including steatocystoma and vellus hair cysts), palmoplantar hyperhydrosis, and follicular keratoses on the trunk and extremities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/353335">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_316921"><div><strong>Congenital hypotrichosis with juvenile macular dystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>316921</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.">C1832162</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital hypotrichosis with juvenile macular dystrophy (HJMD) is an autosomal recessive disorder characterized by hair loss followed by progressive macular degeneration and early blindness. Scalp hair is lost during the first months of life, with onset of retinal degeneration and vision loss a few years to 2 decades later (summary by Sprecher et al., 2001 and Indelman et al., 2002).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/316921">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_331805"><div><strong>Bethlem myopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>331805</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.">C1834674</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bethlem myopathy-1 (BTHLM1) is a congenital muscular dystrophy characterized by distal joint laxity and a combination of distal and proximal joint contractures. The age at onset is highly variable, ranging from infancy to adulthood. Disease progression is slow and ambulation is usually retained into adulthood (summary by Butterfield et al., 2013).&#13; Genetic Heterogeneity of Bethlem Myopathy&#13; See Bethlem myopathy-1B (BTHLM1B; 620725), caused by mutation in the COL6A2 gene (120240) on chromosome 21q22; Bethlem myopathy-1C (620726), caused by mutation the COL6A3 gene (120250) on chromosome 2q37; and Bethlem myopathy-2 (BTHLM2; 616471), caused by mutation in the COL12A1 gene (120320) on chromosome 6q13-q14.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/331805">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_324338"><div><strong>Palmoplantar keratoderma-esophageal carcinoma syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324338</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.">C1835664</a></dd><dt><span class="dotprefix"></span></dt><dd>Neoplastic Process</dd></dl></div></div></div>
<div class="spaceAbove">Tylosis with esophageal cancer (TOC) is an autosomal dominant syndrome characterized by palmoplantar keratoderma (PPK; see 600962 and 144200), oral precursor lesions, and a high lifetime risk of esophageal cancer (summary by Blaydon et al., 2012).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/324338">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_324839"><div><strong>Ichthyosis prematurity syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324839</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.">C1837610</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ichthyosis prematurity syndrome (IPS) is a rare subtype of autosomal recessive congenital ichthyosis, a clinically and genetically heterogeneous group of inherited keratinization disorders. IPS presents with complications at midtrimester of pregnancy leading to prematurity, a thick caseous and desquamating skin, respiratory complications, and persistent eosinophilia. Skin features evolve into a flat follicular hyperkeratosis with atopy (Klar et al., 2004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/324839">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335812"><div><strong>Hypotrichosis 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335812</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.">C1842839</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypotrichosis-6 (HYPT6) is a localized autosomal recessive hypotrichosis characterized by fragile hairs that break easily, leaving short, sparse scalp hairs. The disorder affects the trunk and extremities as well as the scalp, and the eyebrows and eyelashes may also be involved, whereas beard, pubic, and axillary hairs are largely spared. In addition, patients can develop hyperkeratotic follicular papules, erythema, and pruritus in affected areas. In some patients with congenital hypotrichosis, monilethrix-like hairs showing elliptical nodes have been observed (summary by Schaffer et al., 2006).&#13; Genetic Heterogeneity of Autosomal Recessive Localized Hypotrichosis&#13; LAH2 (HYPT7; 604379) is caused by mutation in the LIPH gene (607365) on chromosome 3q27, and LAH3 (HYPT8; 278150) is caused by mutation in the LPAR6 (P2RY5) gene (609239) on chromosome 13q14.12-q14.2.&#13; See also hypotrichosis and recurrent skin vesicles (613102), which is caused by mutation in the DSC3 gene (600271).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335812">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_395578"><div><strong>Hypercarotenemia and vitamin A deficiency, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>395578</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.">C2678266</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/395578">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_442697"><div><strong>Hereditary hypotrichosis with recurrent skin vesicles</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>442697</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.">C2751292</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypotrichosis and recurrent skin vesicles (HYPTSV) is characterized by sparse to absent scalp hair, eyebrows, eyelashes, and body hair, as well as recurrent vesicles of scalp and skin. Some patients also exhibit trauma-induced blistering, and anomalies of dental enamel and of nails may be observed (Ayub et al., 2009; Onoufriadis et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/442697">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462159"><div><strong>Ectodermal dysplasia-cutaneous syndactyly syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462159</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.">C3150809</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462159">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462387"><div><strong>Acne inversa, familial, 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462387</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.">C3151037</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Acne inversa is a chronic inflammatory disease of the hair follicles whose characteristic features include draining sinuses, painful skin abscesses, and disfiguring scars. Manifestations typically appear after puberty. Familial acne inversa is genetically heterogeneous (summary by Wang et al., 2010). Some patients with PSENEN-associated acne inversa also exhibit reticulate hyperpigmentation consistent with Dowling-Degos disease (DDD; see 179850) (Zhou et al., 2016).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of acne inversa, see 142690.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462387">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482790"><div><strong>Ehlers-Danlos syndrome, kyphoscoliotic type, 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482790</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.">C3281160</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">FKBP14 kyphoscoliotic Ehlers-Danlos syndrome (FKBP14-kEDS) is characterized by congenital muscle hypotonia and weakness (typically improving during childhood), progressive scoliosis, joint hypermobility, hyperelastic skin, gross motor developmental delay, myopathy, and hearing impairment. Most affected children achieve independent walking between ages two and four years. A decline of motor function in adulthood may be seen, but affected individuals are likely to be able to participate in activities of daily living in adulthood and maintain independent walking. Occasional features underlying systemic connective tissue involvement include aortic rupture and arterial dissection, subdural hygroma, insufficiency of cardiac valves, bluish sclerae, bladder diverticula, inguinal or umbilical herniae, and premature rupture of membranes during pregnancy. Rarer findings may include bifid uvula with submucous or frank cleft palate, speech/language delay without true cognitive impairment, and rectal prolapse.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482790">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767507"><div><strong>Progressive retinal dystrophy due to retinol transport defect</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767507</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.">C3554593</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Progressive retinal dystrophy due to retinol transport defect is a rare, genetic, metabolite absorption and transport disorder characterized by progressive rod-cone dystrophy, usually presenting with impaired night vision in childhood, progressive loss of visual acuity and severe retinol deficiency without keratomalacia. Association with ocular colobomas, severe acne and hypercholesterolemia has been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767507">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_811523"><div><strong>Pachyonychia congenita 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>811523</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.">C3714948</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pachyonychia congenita (PC) is characterized by hypertrophic nail dystrophy, painful palmoplantar keratoderma and blistering, oral leukokeratosis, pilosebaceous cysts (including steatocystoma and vellus hair cysts), palmoplantar hyperhydrosis, and follicular keratoses on the trunk and extremities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/811523">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815206"><div><strong>Corneal intraepithelial dyskeratosis-palmoplantar hyperkeratosis-laryngeal dyskeratosis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815206</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.">C3808876</a></dd><dt><span class="dotprefix"></span></dt><dd>Neoplastic Process</dd></dl></div></div></div>
<div class="spaceAbove">Multiple self-healing palmoplantar carcinoma (MSPC) is characterized by recurrent keratoacanthomas in palmoplantar skin as well as in conjunctival and corneal epithelia. In addition, patients experience a high susceptibility to malignant squamous cell carcinoma (summary by Zhong et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815206">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815477"><div><strong>Dowling-Degos disease 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815477</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.">C3809147</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dowling-Degos disease (DDD) is an autosomal dominant genodermatosis characterized by reticular pigmentation, usually in a flexural distribution. However, generalized DDD can also occur, with numerous hypopigmented or erythematous macules and papules on the neck, chest, and abdomen. The histopathology of DDD shows characteristic thin branch-like patterns of epidermal downgrowth (summary by Li et al., 2013).&#13; Review of Reticulate Pigment Disorders &#13; Muller et al. (2012) reviewed the spectrum of reticulate pigment disorders of the skin, tabulating all reported cases of patients with Dowling-Degos disease, reticulate acropigmentation of Kitamura (RAK), reticulate acropigmentation of Dohi (DSH, RAD; 127400), Galli-Galli disease (GGD), and Haber syndrome (HS). Of 82 cases, 26 (31.7%) were clinically diagnosed as DDD, 13 (15.9%) as RAD, 11 (13.4%) as GGD, 8 (9.8%) as RAK, and 8 (9.8%) as HS; in addition, 16 (19.5%) of the cases showed overlap between DDD and RAK. Muller et al. (2012) also published photographs of an affected individual exhibiting an overlap of clinical features of DDD, GGD, RAD, and RAK. The authors noted that in reticulate disorders of the skin, the main disease entity is DDD, with a subset of cases exhibiting acantholysis (GGD), facial erythema (HS), or an acral distribution (RAD; RAK). Muller et al. (2012) concluded that all reticulate pigment diseases of the skin are varying manifestations of a single entity.&#13; For a discussion of genetic heterogeneity of reticulate pigment disorders, see 179850.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815477">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_854384"><div><strong>Keratosis follicularis spinulosa decalvans, X-linked</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>854384</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.">C3887525</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Keratosis follicularis spinulosa decalvans is an uncommon genodermatosis chiefly characterized by widespread keratosis pilaris, progressive cicatricial alopecia of the scalp, eyebrows, and eyelashes, and an excess of affected males. Photophobia, blepharitis/conjunctivitis, and corneal dystrophy are characteristic ancillary findings. It is most often inherited as an X-linked trait (summary by Castori et al., 2009).&#13; Autosomal dominant inheritance has also been reported (KFSD; 612843).&#13; The term 'cum ophiasi' means 'with ophiasis,' i.e., baldness in 1 or more winding streaks about the head, which comes from the Greek for snake. Decalvans refers to the loss of hair.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/854384">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_902464"><div><strong>Peeling skin-leukonuchia-acral punctate keratoses-cheilitis-knuckle pads syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>902464</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.">C4225381</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic skin disease characterized by generalized skin peeling, leukonychia, acral punctate keratoses coalescing into focal keratoderma on the weight-bearing areas, angular cheilitis and knuckle pads with multiple hyperkeratotic micropapules. The skin appears dry and scaly with superficial exfoliation and underlying erythema. Histopathologic examination of affected skin areas shows hyperkeratosis, acanthosis and intraepidermal clefting with irregular acantholysis. Additional systemic abnormalities are absent.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/902464">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934703"><div><strong>Congenital muscular dystrophy-respiratory failure-skin abnormalities-joint hyperlaxity syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934703</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.">C4310736</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare congenital muscular dystrophy characterised by neonatal hypotonia, life-threatening respiratory failure and feeding difficulties, furthermore by delayed motor development, severe muscle weakness predominantly affecting axial muscles (leading to poor head control, rigid cervical spine, and severe scoliosis), generalised joint laxity with no or mild contractures, as well as dry skin with follicular hyperkeratosis. Serum creatine kinase is normal or slightly elevated. Muscle biopsy shows fibre size variability, rounded fibres with mild increase of endomysial connective tissue and adipose replacement, abundant minicore lesions, increase of centrally located nuclei, angular fibres and cap lesions.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934703">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1380109"><div><strong>Autoinflammation with arthritis and dyskeratosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1380109</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.">C4479278</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autoinflammation with arthritis and dyskeratosis (AIADK) is characterized by recurrent fever, widespread skin dyskeratosis, arthritis, elevated biologic markers of inflammation, and mild autoimmunity with a high transitional B-cell level (summary by Grandemange et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1380109">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1644485"><div><strong>Palmoplantar keratoderma, nonepidermolytic, focal 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1644485</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.">C4552049</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Focal nonepidermolytic palmoplantar keratoderma-1 (FNEPPK1) is an autosomal dominant skin disorder characterized by large, hard, compact, painful masses of keratin that develop at sites of recurrent friction, principally on the feet, though also on the palms and other sites, without evidence of epidermolysis (summary by Kelsell et al., 1995).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1644485">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1677486"><div><strong>Warburg-cinotti syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1677486</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.">C5193019</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Warburg-Cinotti syndrome (WRCN) is characterized by progressive corneal neovascularization, keloid formation, chronic skin ulcers, wasting of subcutaneous tissue, flexion contractures of the fingers, and acroosteolysis (Xu et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1677486">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684762"><div><strong>Trichothiodystrophy 7, nonphotosensitive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684762</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.">C5231403</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nonphotosensitive trichothiodystrophy-7 (TTD7) is an autosomal recessive disorder characterized by cysteine- and threonine-deficient hair that displays a diagnostic alternating light and dark 'tiger-tail' banding pattern under polarization microscopy, as well as ichthyosis (Theil et al., 2019).&#13; For a discussion of genetic heterogeneity of trichothiodystrophy, see 601675.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684762">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1746744"><div><strong>IFAP syndrome 1, with or without BRESHECK syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1746744</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.">C5399971</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The IFAP/BRESHECK syndrome is an X-linked multiple congenital anomaly disorder with variable severity. The classic triad, which defines IFAP, is ichthyosis follicularis, atrichia, and photophobia. Some patients have additional features, including mental retardation, brain anomalies, Hirschsprung disease, corneal opacifications, kidney dysplasia, cryptorchidism, cleft palate, and skeletal malformations, particularly of the vertebrae, which constitutes BRESHECK syndrome (summary by Naiki et al., 2012).&#13; Genetic Heterogeneity of IFAP Syndrome&#13; IFAP syndrome-2 (IFAP2; 619016) is caused by heterozygous mutation in the SREBF1 gene (184756) on chromosome 17p11.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1746744">Condition Record</a></div></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462387" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acne inversa, familial, 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1380109" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autoinflammation with arthritis and dyskeratosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_331805" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bethlem myopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_316921" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital hypotrichosis with juvenile macular dystrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934703" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital muscular dystrophy-respiratory failure-skin abnormalities-joint hyperlaxity syndrome</a></div><div class="jig-moreless" data-jigconfig="class: 'moveDown', moreText: 'See full list (27)', lessText: 'Show less', nodeBefore: 0"><span id="clinMore">
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815206" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Corneal intraepithelial dyskeratosis-palmoplantar hyperkeratosis-laryngeal dyskeratosis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815477" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dowling-Degos disease 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462159" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ectodermal dysplasia-cutaneous syndactyly syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75672" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ehlers-Danlos syndrome, kyphoscoliotic type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482790" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ehlers-Danlos syndrome, kyphoscoliotic type, 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_442697" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary hypotrichosis with recurrent skin vesicles</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_220887" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary mucoepithelial dysplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_395578" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypercarotenemia and vitamin A deficiency, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335812" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypotrichosis 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_324839" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ichthyosis prematurity syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1746744" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">IFAP syndrome 1, with or without BRESHECK syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_854384" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Keratosis follicularis spinulosa decalvans, X-linked</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208666" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Odonto-onycho-dermal dysplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_353335" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pachyonychia congenita 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_811523" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pachyonychia congenita 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1644485" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Palmoplantar keratoderma, nonepidermolytic, focal 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_324338" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Palmoplantar keratoderma-esophageal carcinoma syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_902464" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peeling skin-leukonuchia-acral punctate keratoses-cheilitis-knuckle pads syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767507" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Progressive retinal dystrophy due to retinol transport defect</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684762" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichothiodystrophy 7, nonphotosensitive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98046" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ullrich congenital muscular dystrophy 1A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1677486" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Warburg-cinotti syndrome</a></div></span></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/37166753">Keratosis pilaris: an update and approach to management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kodali N,
Patel VM,
Schwartz RA</span><br />
<span class="medgenPMjournal">Ital J Dermatol Venerol</span>
2023 Jun;158(3):217-223.
Epub 2023 May 11
doi: 10.23736/S2784-8671.23.07594-1.
<span class="bold">PMID: </span><a href="/pubmed/37166753" target="_blank">37166753</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22phrynoderma%22%5Btiab%3A~0%5D)%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 (1)</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/24274972">A case of phrynoderma in a patient with Crohn's disease.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Cobos G,
Cornejo C,
McMahon P</span><br />
<span class="medgenPMjournal">Pediatr Dermatol</span>
2015 Mar-Apr;32(2):234-6.
Epub 2013 Nov 26
doi: 10.1111/pde.12265.
<span class="bold">PMID: </span><a href="/pubmed/24274972" target="_blank">24274972</a></div>
<div class="nl"><a target="_blank" href="/pubmed/19015431">Follicular eruption on arms and legs. Phrynoderma.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Armstrong AW,
Setyadi HG,
Liu V,
Strasswimmer J</span><br />
<span class="medgenPMjournal">Arch Dermatol</span>
2008 Nov;144(11):1509-14.
doi: 10.1001/archderm.144.11.1509-a.
<span class="bold">PMID: </span><a href="/pubmed/19015431" target="_blank">19015431</a></div>
<div class="nl"><a target="_blank" href="/pubmed/18581010">Phrynoderma: a forgotten entity in a developed country.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Chia MW,
Tay YK,
Liu TT</span><br />
<span class="medgenPMjournal">Singapore Med J</span>
2008 Jun;49(6):e160-2.
<span class="bold">PMID: </span><a href="/pubmed/18581010" target="_blank">18581010</a></div>
<div class="nl"><a target="_blank" href="/pubmed/16914997">Cutaneous manifestations of nutritional deficiency.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Heath ML,
Sidbury R</span><br />
<span class="medgenPMjournal">Curr Opin Pediatr</span>
2006 Aug;18(4):417-22.
doi: 10.1097/01.mop.0000236392.87203.cc.
<span class="bold">PMID: </span><a href="/pubmed/16914997" target="_blank">16914997</a></div>
<div class="nl"><a target="_blank" href="/pubmed/3341256">Vitamin E deficiency in phrynoderma cases from Sri Lanka.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Christiansen EN,
Piyasena C,
Bjørneboe GE,
Bibow K,
Nilsson A,
Wandel M</span><br />
<span class="medgenPMjournal">Am J Clin Nutr</span>
1988 Feb;47(2):253-5.
doi: 10.1093/ajcn/47.2.253.
<span class="bold">PMID: </span><a href="/pubmed/3341256" target="_blank">3341256</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Phrynoderma%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 (8)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/37166753">Keratosis pilaris: an update and approach to management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kodali N,
Patel VM,
Schwartz RA</span><br />
<span class="medgenPMjournal">Ital J Dermatol Venerol</span>
2023 Jun;158(3):217-223.
Epub 2023 May 11
doi: 10.23736/S2784-8671.23.07594-1.
<span class="bold">PMID: </span><a href="/pubmed/37166753" target="_blank">37166753</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25333075">Unusual clinical manifestations in a case of Alagille syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gadkari R,
Doshi B,
Nayak C,
Ghildiyal R,
Madke B,
Ghia D</span><br />
<span class="medgenPMjournal">Pediatr Dermatol</span>
2014 Sep-Oct;31(5):599-602.
doi: 10.1111/pde.12132.
<span class="bold">PMID: </span><a href="/pubmed/25333075" target="_blank">25333075</a></div>
<div class="nl"><a target="_blank" href="/pubmed/19015431">Follicular eruption on arms and legs. Phrynoderma.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Armstrong AW,
Setyadi HG,
Liu V,
Strasswimmer J</span><br />
<span class="medgenPMjournal">Arch Dermatol</span>
2008 Nov;144(11):1509-14.
doi: 10.1001/archderm.144.11.1509-a.
<span class="bold">PMID: </span><a href="/pubmed/19015431" target="_blank">19015431</a></div>
<div class="nl"><a target="_blank" href="/pubmed/3074098">Phrynoderma: a review of 105 cases.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nakjang Y,
Yuttanavivat T</span><br />
<span class="medgenPMjournal">J Dermatol</span>
1988 Dec;15(6):531-4.
doi: 10.1111/j.1346-8138.1988.tb01204.x.
<span class="bold">PMID: </span><a href="/pubmed/3074098" target="_blank">3074098</a></div>
<div class="nl"><a target="_blank" href="/pubmed/6840944">Phrynoderma.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Pettit JH</span><br />
<span class="medgenPMjournal">Int J Dermatol</span>
1983 Mar;22(2):117-9.
doi: 10.1111/j.1365-4362.1983.tb03328.x.
<span class="bold">PMID: </span><a href="/pubmed/6840944" target="_blank">6840944</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Phrynoderma%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 (14)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/25333075">Unusual clinical manifestations in a case of Alagille syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gadkari R,
Doshi B,
Nayak C,
Ghildiyal R,
Madke B,
Ghia D</span><br />
<span class="medgenPMjournal">Pediatr Dermatol</span>
2014 Sep-Oct;31(5):599-602.
doi: 10.1111/pde.12132.
<span class="bold">PMID: </span><a href="/pubmed/25333075" target="_blank">25333075</a></div>
<div class="nl"><a target="_blank" href="/pubmed/20228538">Diet in dermatology: revisited.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kaimal S,
Thappa DM</span><br />
<span class="medgenPMjournal">Indian J Dermatol Venereol Leprol</span>
2010 Mar-Apr;76(2):103-15.
doi: 10.4103/0378-6323.60540.
<span class="bold">PMID: </span><a href="/pubmed/20228538" target="_blank">20228538</a></div>
<div class="nl"><a target="_blank" href="/pubmed/10426920">Vitamin A deficiency phrynoderma: due to malabsorption and inadequate diet.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Bleasel NR,
Stapleton KM,
Lee MS,
Sullivan J</span><br />
<span class="medgenPMjournal">J Am Acad Dermatol</span>
1999 Aug;41(2 Pt 2):322-4.
doi: 10.1016/s0190-9622(99)70375-0.
<span class="bold">PMID: </span><a href="/pubmed/10426920" target="_blank">10426920</a></div>
<div class="nl"><a target="_blank" href="/pubmed/6023849">Biochemical studies in phrynoderma (follicular hyperkeratosis). II. Polyunsaturated fatty acid levels in plasma and erythrocytes of patients suffering from phrynoderma.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Bhat KS,
Belavady B</span><br />
<span class="medgenPMjournal">Am J Clin Nutr</span>
1967 May;20(5):386-92.
doi: 10.1093/ajcn/20.5.386.
<span class="bold">PMID: </span><a href="/pubmed/6023849" target="_blank">6023849</a></div>
<div class="nl"><a target="_blank" href="/pubmed/5900901">Phrynoderma.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Shrank AB</span><br />
<span class="medgenPMjournal">Br Med J</span>
1966 Jan 1;1(5478):29-30.
doi: 10.1136/bmj.1.5478.29.
<span class="bold">PMID: </span><a href="/pubmed/5900901" target="_blank">5900901</a><a href="/pmc/articles/PMC1845261" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Phrynoderma%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 (13)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/19015431">Follicular eruption on arms and legs. Phrynoderma.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Armstrong AW,
Setyadi HG,
Liu V,
Strasswimmer J</span><br />
<span class="medgenPMjournal">Arch Dermatol</span>
2008 Nov;144(11):1509-14.
doi: 10.1001/archderm.144.11.1509-a.
<span class="bold">PMID: </span><a href="/pubmed/19015431" target="_blank">19015431</a></div>
<div class="nl"><a target="_blank" href="/pubmed/367288">Vitamin A deficiency following small-bowel bypass surgery for obesity.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wechsler HL</span><br />
<span class="medgenPMjournal">Arch Dermatol</span>
1979 Jan;115(1):73-5.
<span class="bold">PMID: </span><a href="/pubmed/367288" target="_blank">367288</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Phrynoderma%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 (2)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/26513075">Phrynoderma and acquired acrodermatitis enteropathica in breastfeeding women after bariatric surgery.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Monshi B,
Stockinger T,
Vigl K,
Richter L,
Weihsengruber F,
Rappersberger K</span><br />
<span class="medgenPMjournal">J Dtsch Dermatol Ges</span>
2015 Nov;13(11):1147-54.
doi: 10.1111/ddg.12795.
<span class="bold">PMID: </span><a href="/pubmed/26513075" target="_blank">26513075</a></div>
<div class="nl"><a target="_blank" href="/pubmed/3341256">Vitamin E deficiency in phrynoderma cases from Sri Lanka.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Christiansen EN,
Piyasena C,
Bjørneboe GE,
Bibow K,
Nilsson A,
Wandel M</span><br />
<span class="medgenPMjournal">Am J Clin Nutr</span>
1988 Feb;47(2):253-5.
doi: 10.1093/ajcn/47.2.253.
<span class="bold">PMID: </span><a href="/pubmed/3341256" target="_blank">3341256</a></div>
<div class="nl"><a target="_blank" href="/pubmed/367288">Vitamin A deficiency following small-bowel bypass surgery for obesity.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wechsler HL</span><br />
<span class="medgenPMjournal">Arch Dermatol</span>
1979 Jan;115(1):73-5.
<span class="bold">PMID: </span><a href="/pubmed/367288" target="_blank">367288</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Phrynoderma%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 (3)</a></div></div>
</div>
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<h2 class="offscreen_noflow">Supplemental Content</h2>
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<div class="portlet_content ln"><ul id="my-toc"></ul></div>
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<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C0334013%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (1)</a></li>
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