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</a><h1 class="with-also" itemprop="name">Birthmarks - pigmented</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>A birthmark is a skin marking that is present at birth. Birthmarks include cafe-au-lait spots, moles, and Mongolian spots. Birthmarks can be <a test="test" href="./001440.htm">red</a> or other colors.</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>Different types of birthmarks have different causes.</p><ul><li>Cafe-au-lait spots are common at or after birth. Someone who has many of these spots may have a genetic disorder called <a test="test" href="./000847.htm">neurofibromatosis</a>.</li><li>Moles are very common -- nearly everyone has them. Most moles appear after birth.</li><li>Mongolian spots are more common in people with darker skin.</li></ul></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>Each type of birthmark has its own appearance:</p><ul><li>Cafe-au-lait spots are light tan, the color of coffee with milk.</li><li>Moles are small clusters of colored skin cells.</li><li><a test="test" href="./001472.htm">Mongolian spots</a> (also called Mongolian blue spots) are usually bluish or bruised-looking. They often appear over the lower back or buttocks. They are also found on other areas, such as the trunk or arms. </li></ul><p>Other signs of birthmarks are:</p><ul><li><a test="test" href="./003242.htm">Abnormally dark or light skin</a></li><li>Growth of hair from pigmented skin</li><li><a test="test" href="./003220.htm">Skin lesion</a> (area that is different from the skin around it)</li><li><a test="test" href="./003279.htm">Skin lumps</a></li><li>Textured skin that can be smooth, flat, raised, or wrinkled </li></ul></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>Your health care provider will examine your skin to make the diagnosis. You may have a <a test="test" href="./003416.htm">biopsy</a> to look for skin changes that are signs of cancer. Your provider may take pictures of your birthmark to compare changes over time. </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>The type of treatment you have depends on the type of birthmark and related conditions. Usually, no treatment is needed for the birthmark itself.</p><p>Large birthmarks that affect your appearance and self-esteem may be covered with special cosmetics.</p><p>You may have surgery to remove moles if they affect your appearance or increase your risk for <a test="test" href="./001289.htm">cancer</a>. Talk to your provider about how and when any of your moles should be removed.</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-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>Large moles that are present at birth may develop <a test="test" href="./000850.htm">melanoma</a>, a type of skin cancer. This is especially true if the mole covers an area larger than the size of a fist. The cancer risk is related to the size, location, shape, and color of the mole.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Possible Complications</h2></div><div class="section-button"><button type="submit" aria-controls="section-7" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-7"><p>Complications of birthmarks can include:</p><ul><li>Skin cancer</li><li>Emotional distress if the birthmark affects appearance </li></ul></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-8" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-8"><p>Have your provider examine any birthmark. Tell your provider about any changes in the birthmark, such as these:</p><ul><li>Bleeding</li><li>Color change</li><li>Inflammation</li><li>Itching</li><li>Open sore (ulceration)</li><li>Pain</li><li>Size change</li><li>Texture change</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Prevention</h2></div><div class="section-button"><button type="submit" aria-controls="section-9" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-9"><p>There is no known way to prevent birthmarks. A person with birthmarks should use a strong sunscreen when outdoors.</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>Hairy nevus; Nevi; Mole; Cafe-au-lait spots; Congenital nevus</p></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Images</h2></div><div class="section-button"><button type="submit" aria-controls="section-tnails" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/17262t.jpg" alt="Mongolian blue spots" title="Mongolian blue spots" class="side-img"/><a href="../imagepages/17262.htm">Mongolian blue spots</a></li>
<li><img src="//medlineplus.gov/ency/images/ency/tnails/8912t.jpg" alt="Skin layers" title="Skin layers" class="side-img"/><a href="../imagepages/8912.htm">Skin layers</a></li>
</ul></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>Gawkrodger DJ, Ardern-Jones MR. Pigmentation. In: Gawkrodger DJ, Ardern-Jones MR, eds. <em>Dermatology: An Illustrated Colour Text. </em>7th ed. Philadelphia, PA: Elsevier; 2021:chap 42.</p><p>James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM. Disturbances of pigmentation. In: James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM, eds. <em>Andrews' Diseases of the Skin: Clinical Dermatology. </em>13th ed. Philadelphia, PA: Elsevier; 2020:chap 36.</p><p>Marks JG, Miller JJ. Pigmented growths. In: Marks JG, Miller JJ, eds. <em>Lookingbill and Marks' Principles of Dermatology.</em> 6th ed. Philadelphia, PA: Elsevier; 2019:chap 6.</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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