--and it sounds like you may have peripheral neuropathy of some sort, perhaps primarily of the small, unmyelinated fibers that subsume the sensations of pain and temperature (if that doctor is accurate that your "main nerves" are not the problem).

You should come over to our neuropathy section here and read read read--I'm surmising from what you've written this is not something you've heard about before or know much about--yet --

http://neurotalk.psychcentral.com/forum20.html