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</div><div><span>Lichen simplex chronicus</span></div></div>
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<article><div id="d-article"><div class="page-info"><div class="page-title"><a name="start" id="start">
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</a><h1 class="with-also" itemprop="name">Lichen simplex chronicus</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>Lichen simplex chronicus (LSC) is a skin condition caused by <a test="test" href="./002312.htm">chronic</a> itching and scratching.</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>LSC may occur in people who have:</p><ul><li>Skin allergies</li><li><a test="test" href="./000853.htm">Eczema</a> (atopic dermatitis)</li><li><a test="test" href="./000434.htm">Psoriasis</a></li><li>Nervousness, anxiety, depression, and other emotional problems </li></ul><p>The problem is common in adults but may also be seen in children.</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>LSC leads to scratching, which then causes more itching. It often follows this pattern:</p><ul><li>It may start when something rubs, irritates, or scratches the skin, such as clothing.</li><li>The person begins to rub or scratch the itchy area. Constant scratching (often during sleep) causes the skin to thicken.</li><li>The thickened skin itches, and this leads to more scratching. This then causes more thickening of the skin.</li><li>The skin may become leathery and brownish in the affected area.</li></ul><p>Symptoms include:</p><ul><li><a test="test" href="./003217.htm">Itching</a> of the skin that may be long-term (chronic), intense, and that increases with stress</li><li>Leathery texture to the skin</li><li>Raw areas of skin</li><li><a test="test" href="./003226.htm">Scaling</a></li><li><a test="test" href="./003220.htm">Skin lesion</a>, patch, or plaque with sharp borders and a leathery texture, located on the ankle, wrist, back of the neck, rectum, anal area, forearms, thighs, lower leg, back of the knee, and inner elbow</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 look at your skin and ask if you have had chronic itching and scratching in the past. A <a test="test" href="./003840.htm">skin lesion biopsy</a> may be done to confirm the diagnosis.</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 main treatment is to reduce the itch.</p><p>You may need to use these medicines on your skin:</p><ul><li>Lotion or steroid cream on the area to calm itching and irritation</li><li>Numbing medicine</li><li>Peeling ointments containing salicylic acid, lactic acid, or urea on patches of thick skin</li></ul><p>You may need to use dressings that moisturize, cover, and protect the area. These may be used with or without medicated creams. They are left in place for a week or more at a time. Wearing cotton gloves at night may prevent skin damage from scratching.</p><p>To control itching and stress, you may need to take medicines by mouth, such as:</p><ul><li>Antihistamines</li><li>Other oral medicines that control itch or pain</li></ul><p>Steroids may be injected directly into the skin patches to reduce itching and irritation.</p><p>You may need to take antidepressants and tranquilizers if the cause of your itching is emotional. Other measures include:</p><ul><li>Counseling to help you realize the importance of not scratching</li><li>Stress management</li><li>Behavior modification</li></ul></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>You can control LSC by reducing itch and controlling scratching. While the condition can be treated, it often returns. The condition may return or move to different areas on the skin. Ongoing management can help relieve symptoms.</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-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>These complications of LSC can occur:</p><ul><li>Bacterial and fungal skin infection</li><li>Permanent changes in skin color</li><li>Permanent scar</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-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>Contact your provider if:</p><ul><li>Symptoms get worse</li><li>You develop new symptoms, especially signs of skin infection such as pain, redness, drainage from the area, or fever </li></ul></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>LSC; Neurodermatitis circumscripta</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/1562t.jpg" alt="Lichen simplex chronicus on the ankle" title="Lichen simplex chronicus on the ankle" class="side-img"/><a href="../imagepages/1562.htm">Lichen simplex chronicus on the ankle</a></li>
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/2494t.jpg" alt="Lichen simplex chronicus" title="Lichen simplex chronicus" class="side-img"/><a href="../imagepages/2494.htm">Lichen simplex chronicus</a></li>
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/2495t.jpg" alt="Lichen simplex chronicus on the back" title="Lichen simplex chronicus on the back" class="side-img"/><a href="../imagepages/2495.htm">Lichen simplex chronicus on the back</a></li>
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</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>Dinulos JGH. Eczema and hand dermatitis. In: Dinulos JGH, ed. <em>Habif's Clinical Dermatology</em>. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 3.</p><p>James WD, Elston DM, Treat JR, Rosenbach MA, Neuhaus IM. Pruritus and neurocutaneous dermatoses. 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 4.</p><p>Patterson JW. The psoriasiform reaction pattern. In: Patterson JW, ed. <em>Weedon's Skin Pathology</em>. 5th ed. Philadelphia, PA: Elsevier Limited; 2021:chap 5.</p><p>Renzi MA, Sommer LL, Baker DJ. Lichen simplex chronicus. In: Lebwohl MG, Heymann WR, Coulson IH, Murrell DF, eds. <em>Treatment of Skin Disease: Comprehensive Therapeutic Strategies</em>. 6th ed. Philadelphia, PA: Elsevier, 2022:chap 138.</p><p>Zug KA. Eczema. In: Habif TP, Dinulos JGH, Chapman MS, Zug KA, eds. <em>Skin Disease: Diagnosis and Treatment</em>. 4th ed. Philadelphia, PA: Elsevier; 2018:chap 2.</p></div></div></section>
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