What is the difference between peripheral neuropathy and neuralgia?

Signs: Neuralgia is pain is the distribution of a nerve. Neuropathy is objective evidence of nerve dysfunction. For example, numbness or weakness atteibuted to a nerve. One can have a neuralgia without objective evidence of nerve dysfunction. One can have neuropathy without pain.

Pain vs. Pathology: Neuropathy translates as "nerve injury" and can occur without associated pain. Neuralgia means "nerve pain" and refers specifically to nerve-related pain; often in the context of a neuropathy.