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</div><div><span>Mononeuropathy</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">Mononeuropathy</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>Mononeuropathy is damage to a single nerve, which results in <a test="test" href="./003190.htm">loss of movement</a>, sensation, or other function of that nerve.</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>Mononeuropathy is a type of damage to a nerve outside the brain and spinal cord (<a test="test" href="./000593.htm">peripheral neuropathy</a>).</p><p>Mononeuropathy is most often caused by injury. Diseases affecting the entire body (<a test="test" href="./002294.htm">systemic</a> disorders) can also cause isolated nerve damage.</p><p>Long-term pressure on a nerve due to swelling or injury can result in mononeuropathy. The covering of the nerve (<a test="test" href="./002261.htm">myelin</a> sheath) or part of the nerve cell (the axon) may be damaged. This damage slows or prevents signals from traveling through the damaged nerves.</p><p>Mononeuropathy may involve any part of the body. Some common forms of mononeuropathy include:</p><ul><li><a test="test" href="./000689.htm">Axillary nerve dysfunction</a> (loss of movement or sensation in the shoulder)
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</li><li><a test="test" href="./000791.htm">Common peroneal nerve dysfunction</a> (loss of movement or sensation in the foot and leg)
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</li><li><a test="test" href="./000433.htm">Carpal tunnel syndrome</a> (median nerve dysfunction -- including numbness, tingling, weakness, or muscle damage in the hand and fingers)
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</li><li>
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Cranial mononeuropathy III, IV, <a test="test" href="./000698.htm">compression</a> or <a test="test" href="./000692.htm">diabetic</a> type
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</li><li><a test="test" href="./000690.htm">Cranial mononeuropathy VI</a> (double vision)</li><li>Cranial mononeuropathy VII (facial paralysis)</li><li><a test="test" href="./000687.htm">Femoral nerve dysfunction</a> (loss of movement or sensation in part of the leg)</li><li><a test="test" href="./000790.htm">Radial nerve dysfunction</a> (problems with movement in the arm and wrist and with sensation in the back of the arm or hand)</li><li><a test="test" href="./000686.htm">Sciatic nerve dysfunction</a> (problem with the muscles of the back of the knee and lower leg, and sensation to the back of the thigh, part of the lower leg, and sole of the foot)</li><li><a test="test" href="./000789.htm">Ulnar nerve dysfunction</a> (cubital tunnel syndrome -- including numbness, tingling, weakness of outer and underside of arm, palm, ring and little fingers)</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>Symptoms depend on the specific nerve affected, and may include:</p><ul><li><a test="test" href="./003206.htm">Loss of sensation</a></li><li><a test="test" href="./003190.htm">Paralysis</a></li><li><a test="test" href="./003206.htm">Tingling</a>, burning, pain, <a test="test" href="./003206.htm">abnormal sensations</a></li><li><a test="test" href="./003174.htm">Weakness</a></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>The health care provider will perform a physical exam and focus on the affected area. A detailed medical history is needed to determine the possible cause of the disorder.</p><p>Tests that may be done include:</p><ul><li><a test="test" href="./003929.htm">Electromyogram</a> (EMG) to check the electrical activity in the muscles</li><li><a test="test" href="./003927.htm">Nerve conduction tests</a> (NCV) to check the speed of electrical activity in the nerves</li><li>Nerve ultrasound to view the nerves</li><li><a test="test" href="./003337.htm">X-ray</a>, <a test="test" href="./003335.htm">MRI</a> or <a test="test" href="./003330.htm">CT scan</a> to get an overall view of the affected area</li><li>Blood tests</li><li><a test="test" href="./003928.htm">Nerve biopsy</a> (in case of mononeuropathy due to vasculitis)</li><li><a test="test" href="./003369.htm">CSF examination</a></li><li><a test="test" href="./003840.htm">Skin biopsy</a></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 the affected body part as much as possible.</p><p>Some medical conditions make nerves more prone to injury. For example, high blood pressure and diabetes can injure an artery, which can often affect a single nerve. So, the underlying condition should be treated.</p><p>Treatment options may include any of the following:</p><ul><li>Over the counter painkillers, such as anti-inflammatory medicines for mild pain</li><li>Antidepressants, anticonvulsants, and similar medicines for chronic pain</li><li>Injections of steroid medicines to reduce <a test="test" href="./003103.htm">swelling</a> and pressure on the nerve</li><li>Surgery to relieve pressure on the nerve</li><li>Physical therapy exercises to maintain muscle strength</li><li>Braces, <a test="test" href="./000040.htm">splints</a>, or other devices to help with movement</li><li>Transcutaneous electrical nerve stimulation (TENS) to improve nerve pain associated with diabetes</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>Mononeuropathy may be disabling and painful. If the cause of the nerve dysfunction can be found and successfully treated, a full recovery is possible in some cases.</p><p><a test="test" href="./001407.htm">Nerve pain</a> may be uncomfortable and last for a long time.</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, loss of tissue mass</li><li>Medicine side effects</li><li>Repeated or unnoticed injury to the affected area due to lack of sensation</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-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>Avoiding pressure or traumatic injury may prevent many forms of mononeuropathy. Treating conditions such as high blood pressure or diabetes also decreases the risk of developing the condition.</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; Isolated mononeuritis</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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</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>Abbott EE, Bunney EB. Peripheral nerve disorders. In: Walls RM, ed. <em>Rosen's Emergency Medicine: Concepts and Clinical Practice</em>. 10th ed. Philadelphia, PA: Elsevier; 2023:chap 93.</p><p>National Institute of Neurological Disorders and Stroke website. Peripheral neuropathy. <a href="https://www.ninds.nih.gov/health-information/disorders/peripheral-neuropathy" target="_blank">www.ninds.nih.gov/health-information/disorders/peripheral-neuropathy</a>. Updated March 13, 2023. Accessed May 3, 2023.</p><p>Smith G, Shy ME. Peripheral neuropathies. In: Goldman L, Schafer AI, eds. <em>Goldman-Cecil Medicine</em>. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 392.</p></div></div></section>
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<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 4/25/2022</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: Joseph V. Campellone, MD, Department of Neurology, Cooper University Hospital, 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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