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</div><div><span>Ulnar nerve dysfunction</span></div></div>
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</a><h1 class="with-also" itemprop="name">Ulnar nerve dysfunction</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>Ulnar nerve dysfunction is a problem with one of the nerves that travel from the shoulder to the hand, called the ulnar nerve. It helps you move your arm, wrist, and hand.</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>Damage to one nerve, such as the ulnar nerve, is called <a test="test" href="./000780.htm">mononeuropathy</a>. Mononeuropathy means there is damage to a single nerve. Diseases affecting the entire body (systemic disorders) can also cause isolated nerve damage.</p><p>Causes of mononeuropathy include:</p><ul><li>An illness in the whole body that damages a single nerve</li><li>Direct injury to the nerve</li><li>Long-term pressure on the nerve</li><li>Pressure on the nerve caused by swelling or injury of nearby body structures </li></ul><p>Ulnar neuropathy is also common in those with <a test="test" href="./001214.htm">diabetes</a>.</p><p>Ulnar neuropathy occurs when there is damage to the ulnar nerve. This nerve travels down the arm to the wrist, hand, and ring and little fingers. It passes just under the surface of the skin near the elbow. So, bumping the nerve there causes the pain and tingling of hitting your funny bone.</p><p>When the nerve is compressed in the elbow, a problem called cubital tunnel syndrome may result. The ulnar nerve can also get compressed in the wrist and less often, at other parts of the arm.</p><p>When damage destroys the nerve covering (<a test="test" href="./002261.htm">myelin sheath</a>) or part of the nerve itself, nerve signaling is slowed or prevented. When the nerve fibers themselves (axons) are injured, this may cause a more severe problem.</p><p>Damage to the ulnar nerve can be caused by:</p><ul><li>Long-term pressure on the elbow or base of the palm</li><li>An elbow <a test="test" href="./000001.htm">fracture</a> or <a test="test" href="./000014.htm">dislocation</a></li><li>Keeping the elbow bent for a long time or repeated elbow bending, such as with repetitive movements at work, or cigarette smoking</li></ul><p>In some cases, no cause can be found.</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>Symptoms may include any of the following:</p><ul><li>Abnormal sensations in the little finger and part of the ring finger, usually on the palm side</li><li><a test="test" href="./003174.htm">Weakness</a>, loss of coordination of the fingers</li><li>Claw-like deformity of the hand and wrist</li><li>
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Pain, <a test="test" href="./003206.htm">numbness</a>, decreased sensation, tingling, or burning sensation in the areas controlled by the nerve</li></ul><p>Pain or numbness may awaken you from sleep. Activities such as tennis or golf may make the condition worse.</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>Your health care provider will examine you and ask about your symptoms and medical history. You may be asked what you were doing before the symptoms started.</p><p>Tests that may be needed include:</p><ul><li>Blood tests</li><li>Imaging tests, such as <a test="test" href="./007358.htm">MRI</a> to view the nerve and nearby structures</li><li><a test="test" href="./003927.htm">Nerve conduction tests</a> to check how fast nerve signals travel</li><li><a test="test" href="./003929.htm">Electromyography</a> (EMG) to check the health of the ulnar nerve and the muscles it controls</li><li><a test="test" href="./003928.htm">Nerve biopsy</a> to examine a piece of nerve tissue (rarely needed) </li></ul></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 goal of treatment is to allow you to use your hand and arm as much as possible. Your provider will find and treat the cause, if possible. Sometimes, no treatment is needed and you will get better on your own.</p><p>If medicines are needed, they may include:</p><ul><li>Over-the-counter or prescription medicines (such as gabapentin and pregabalin)</li><li>Corticosteroid injections around the nerve to reduce swelling and pressure</li></ul><p>Your provider will likely suggest self-care measures. These may include:</p><ul><li>A supportive splint at either the wrist or elbow to help prevent further injury and relieve the symptoms. You may need to wear it all day and night, or only at night.</li><li>An elbow pad if the ulnar nerve is injured at the elbow. Also, avoid bumping or leaning on the elbow.</li><li>Physical therapy exercises to help maintain muscle strength in the arm.</li></ul><p>Occupational therapy or counseling to suggest changes in the workplace may be needed.</p><p>Surgery to relieve pressure on the nerve may help if the symptoms get worse, or if there is evidence that the nerve isn't improving with conservative treatment.</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>If the cause of the nerve dysfunction can be found and successfully treated, there is a good chance of a full recovery. In some cases, there may be partial or complete loss of movement or sensation.</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>Complications may include:</p><ul><li>Deformity of the hand</li><li>Partial or complete loss of sensation in the hand or fingers</li><li>Partial or complete loss of wrist or hand movement</li><li>Recurrent or unnoticed injury to the hand</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 you have an arm injury and develop numbness, tingling, pain, or weakness down your forearm and the ring and little fingers.</p></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-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>Avoid prolonged pressure on the elbow or palm. Avoid prolonged or repeated elbow bending. Casts, splints, and other appliances should always be examined for proper fit.</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>Neuropathy - ulnar nerve; Ulnar nerve palsy; Mononeuropathy; Cubital tunnel syndrome</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/9992t.jpg" alt="Ulnar nerve damage" title="Ulnar nerve damage" class="side-img"/><a href="../imagepages/9992.htm">Ulnar nerve damage</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>Craig A. Neuropathies. In: Cifu DX, ed. <em>Braddom's Physical Medicine and Rehabilitation</em>. 6th ed. Philadelphia, PA: Elsevier; 2021:chap 41.</p><p>Jobe MT, Martinez SF, Weller WJ. Peripheral nerve injuries. In: Azar FM, Beaty JH, eds. <em>Campbell's Operative Orthopaedics</em>. 14th ed. Philadelphia, PA: Elsevier; 2021:chap 62.</p><p>Katirji B. Disorders of peripheral nerves. In: Jankovic J, Mazziotta JC, Pomeroy SL, Newman NJ, eds. <em>Bradley and Daroff's Neurology in Clinical Practice</em>. 8th ed. Philadelphia, PA: Elsevier; 2022:chap 106.</p><p>Patterson JMM, Novak CB, Mackinnon SE. Compression neuropathies. In: Wolfe SW, Pederson WC, Kozin SH, Cohen MS, eds. <em>Green's Operative Hand Surgery</em>. 8th ed. Philadelphia, PA: Elsevier; 2022:chap 28.</p></div></div></section>
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<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 6/13/2024</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: Joseph V. Campellone, MD, Department of Neurology, Cooper Medical School at Rowan University, Camden, NJ. Review provided by VeriMed Healthcare Network. 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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