Hi T,
I always have more questions LOL.
What kind of work or activities do you do?
Any falls, car accidents, whiplash etc to upper body at any time {even yrs ago}
If so how do you feel about chiropractic? an expert only of course , or perhaps an expert/advance PT.
Do you recall what you might have done to bring on the flares, sometimes we have delayed pain - hrs to a day after an activity.
It sounds like you are experiencing some effects of trigger points.
next I'll post our useful info sticky thread - it's full of saved and very good info - post # 1 is like a crash course for TOS {and related conditions} with various therapies , so be sure to check it first.
http://neurotalk.psychcentral.com/thread84.html
dr & PT info sticky -
http://neurotalk.psychcentral.com/thread135.html
Nice to meet you I hope we can help you get relief soon.