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What are the symptoms of brain neuropathy?

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The symptoms of brain or cranial neuropathy are generally pain, numbness, tingling and muscle weakness, states Johns Hopkins Medicine. However, the symptoms vary depending on the type of brain neuropathy, ranging from drooping facial muscles to double vision.

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Brain or cranial neuropathies are categorized into Bell's palsy, microvascular cranial nerve palsy, third nerve palsy, fourth nerve palsy and sixth nerve palsy, depending on the nerve affected, explains Johns Hopkins Medicine. An individual with Bell's palsy experiences drooping facial muscles and facial swelling caused by a viral infection. An individual with microvascular cranial nerve palsy most likely has diabetes, a condition that can cause nerve neuropathy throughout the body. Double vision and other eyesight problems develop as a result.

Third, fourth and sixth nerve palsy describe the specific nerves affected by the neuropathy, according to Johns Hopkins. The third nerve, which deals with eyesight and vision, fails or malfunctions, causing the eyelid to droop and the pupil to over-dilate. Neuropathy of the fourth or oblique nerve, caused by a birth defect, head injury, stroke or tumor, can cause the eyes to move abnormally or result in double vision. Symptoms of neuropathy of the sixth nerve through infection or pressure are also abnormal eye movement and double vision, as well as migraine headaches.

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