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</div><div><span>Spider angioma</span></div></div>
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</noscript></div><div class="main"><div id="ency_summary"><p>Spider angioma is an abnormal collection of blood vessels near the surface of the skin.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>Causes</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>Spider angiomas are very common. They often occur in pregnant women and in people with liver disease. They can appear in both children and adults. They get their name because the mark looks similar to a red spider.</p><p>They appear most often on the face, neck, upper part of the trunk, arms, and fingers.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Symptoms</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>The main symptom is a blood vessel spot that:</p><ul><li>May have a red dot in the center</li><li>Has reddish extensions that reach out from the center</li><li>Disappears when pressed on and comes back when pressure is released </li></ul><p>In rare cases, bleeding occurs in a spider angioma. </p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Exams and Tests</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>The health care provider will examine the spider angioma on your skin. You may be asked if you have any other symptoms.</p><p>Most of the time, you do not need tests to diagnose the condition. But sometimes, a <a test="test" href="./003840.htm">skin biopsy</a> is needed to confirm the diagnosis. Blood tests may be done if a liver problem is suspected.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Treatment</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>Spider angiomas usually do not need treatment, but burning (<a test="test" href="./002359.htm">electrocautery</a>) or laser treatment is sometimes done.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Outlook (Prognosis)</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>Spider angiomas in children may disappear after puberty, and often disappear after a woman gives birth. Untreated, spider angiomas tend to last in adults.</p><p>Treatment is often successful.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>When to Contact a Medical Professional</h2></div><div class="section-button"><button type="submit" aria-controls="section-6" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-6"><p>Let your provider know if you have a new spider angioma so that other related medical conditions can be ruled out.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>Nevus araneus; Spider telangiectasia; Vascular spider; Spider nevus; Arterial spiders</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>References</h2></div><div class="section-button"><button type="submit" aria-controls="section-Ref" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Ref"><p>Dinulos JGH. Vascular tumors and malformations. In: Dinulos JGH, ed. <em>Habif's Clinical Dermatology</em>. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 23.</p><p>Martin KL. Vascular disorders. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS. Tasker RC, Wilson KM, eds. <em>Nelson Textbook of Pediatrics</em>. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 669.</p></div></div></section>
<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 11/18/2022</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<div id="section-version" class="section-body"><p>Updated by: Elika Hoss, MD, Assistant Professor of Dermatology, Mayo Clinic, Scottsdale, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. </p>
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