Just read online that "psychological changes are seen with Thoracic Outlet Syndrome. It is unclear whether these changes are a cause or result of the syndrome"

Well, having this set of symptoms to a layperson may seem bizarre, but a trained physician should definitely have TOS as one of the possible diagnoses in his or her initial "bag of tricks". They are the ones driving us to the brink of craziness with their delays in diagnosis. How many of us have been through countless doctors, chiropractors, physical therapists attempting to find relief from these symptoms? Add in a workers comp claims adjuster as a stick in the wheel and you can definately cause some psychological changes. So, really, now they want to blame psychological changes as a cause of this physical syndrome?
Experiencing arm tightness, then neck spasm, neck pain, then headaches scapular pain,/ elbow pain, forerm pain finger pins and neddles and then spasm of all muscles around side and back of ribs after doing minimal activities of daily life for months on end wouldn't cause psychological changes????

Yeah, no kidding.

Add in a history of depression and anxiety (aka, Me) and you have a perfect cocktail. Chronic pain is a nightmare, I seriously do not feel like doing anything, not even going to the grocery store. I think I'm getting depressed again.

I totally get it, that the shallow breathing that goes along with anxiety, can contribute to ongoing symptoms and even exacerbate TOS. I do not believe that in the majority of cases anxiety or depression causes TOS.