--though I'm sorry about the situation that brought you here to us.

I agree with the crew posting above; while this could be a peripheral neuropathy problem, it does sound like an onset of reflex sympathetic dystrophy/complex regional pain syndrome, and the sad fact is that many doctors, even neurologists, have little familiarity with this--it often takes a tertiary specialist to know what to look and test for.

You've already been given the forum links here which have a lot of info--I also recommend looking at the info at the very comprehensive Washington University-St. Louis Neuromuscular disorders website (which may help you make distinctions in talking with doctors):

http://neuromuscular.wustl.edu/sensory-pain.html#rsd