ktj,

Have you been evaluated by a chiropractor? A upper cervical chiropractor would be a good start. Also, maybe a physiatrist (Physical Medicine & Rehabilitation Doctor) who understands TOS. Thoracic Outlet Syndrome can cause the IBS and other weakness issues. Some physical therapists can diagnose and treat this if they have the right training. My PT is a true healer in this area.

I have a recurring problem with TOS. My gut will get bloated. My Blood Pressure will get real low. A variety of other odd symptoms will also manifest.

A diagnosis usually starts with a series of lower neck x-rays looking for false/cervical ribs. These are incomplete ribs associated with C-5, C-6 and C-7, that get inflamed and cause the associated nerve roots to get inflamed/impinged. Only some people have these false ribs. They are the most prone to TOS.