How is neuropathy treated, what if they can't find the cause?

Usually...: The symptoms of neuropathy regardless of cause can be treated with medications which work to calm the nerve endings that are irritated and responsible for the pain. If, upon evaluation a cause is found that can be corrected, the doctor will proceed accordingly. Most of the time, however, regardless of cause, the medication is needed.

Peripheral neuropath: Peripheral neuropathy, a result of damage to your peripheral nerves, often causes weakness, numbness and pain, usually in your hands and feet. It can also affect other areas of your body. Diabetes is one of the most common causes...though we do not know exactly what the mechanism is. HIV is another major cause. We do have some good treatment, Neurontin and Lyrica (pregabalin) are excellent..if tolerated.

Always a cause: But discovery of causation may be difficult. We have many approaches to evaluate, including EMG studies, nerve biopsies, blood and urine tests. Would treat the symptoms anyway, such as pain, and supplement B vitamins in form of biologically active medical food.