Hi Coffeebean,

After seeing your symptoms here , I skimmed a few of your recent posts and I wondered if you had ever read about Thoracic Outlet Syndrome{TOS}?

TOS can often affect the ulnar nerve, and causes sx in the hand, arm, shoulder, neck and upper back as well as can cause TMJ sx.
It also has quite a few crossover sx with RSD, a few are different, often w/TOS some will get RSD also.

I just wanted to mention that we have a TOS forum also if you would like to read more about it.
here's the useful sticky thread for TOS-
http://neurotalk.psychcentral.com/thread84.html