I'm going to place copies of your post on the General Health Conditions & Rare Disorders forum and also the New Members forum- just to get more ideas for you.

Here's the main page so you can find your posts on the other forums -
http://neurotalk.psychcentral.com/index.php


TOS usually involves the upper body for the most part- hands, arms ,neck, shoulders, upper back.

If the MRI shows your full spine to be all in good shape - maybe some sort of bodywork would be helpful - somatics, feldenkrais, yoga, hellerwork, etc.
Or it could be something completely different, that you will need more testing to figure it out..

A few have mentioned an autonomic syndrome ??- causes the body to sweat and over react to stimulus.