EMG's will not diagnose small fiber neuropathy, however they can and do diagnose large fiber neuropathy if it is advanced enough.

Liz, PN can be steady progression, say the same, remit and relapse or go away. It depends on the person , and how the PN developed, the cause, and in some cases how well you take care of yourself after you develope it ( nutrients, exercize, supplements etc. ) I had a lumbar block it did nothing for me. I think it would help in cases where nerve impingement in the back was the cause of the PN. There are no definites with PN as to cause, symptoms, or result. There are over 200 causes and many drugs used to treat it. I think Bob was over 60 drugs in his count, probably a lot more by now.