Welcome Jennyk,
You will find alot of great info from the folks here. My TOS started out with the pain in the back of my shoulders. Muscle spasms in my traps, and then my arm went numb. It's been numb for 18 months now.

I also get burning nerve pain with this. Sometimes its my forearm, or my ribs, or an area near my armpit. My pinky & ring finger are numb. I have tendonitis in both arms, shoulder impingement, and some cervical disc degeneration. Alot of these can mimic each other. Get all the tests you can, rule out everthing else. And by all means see a TOS specialist. Good Luck!! Ihtos