Neuropathy: Neuropathy is a term that refers to malfunctions or diseases of the nerves. There are several types of neuropathy including diabetic neuropathy, autonomic neuropathy, ulnar neuropathy, optic neuropathy, peripheral neuropathy, alcoholic neuropathy, proximal neuropathy, cranial neuropathy, auditory neuropathy, and focal neuropathy. Causes of neuropathy can be due to disease, injury, infections, or vitamin deficiencies. Symptoms of neuropathy depend on the nerves involved. Treatment is generally medication and lifestyle changes to prevent further nerve damage.