WebMD Answers
Idiopathic peripheral neuropathy, like diabetic neuropathy, usually causes numbness in the hands and feet. The numbness may go unnoticed if it causes no pain.
Nerve pain in idiopathic peripheral neuropathy is usually in the feet and legs but can also be in the hands and arms. People describe their unexplained nerve pain in different ways:
Simple touching can cause nerve pain, and pain may be constant even when there's no stimulation. Often, unexplained nerve pain is worst at night, interfering with sleep. This can compound the problem because people need adequate sleep in order to cope with pain.
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