@condorbirdy As one who has navigated several major health conditions in the last few years I have gained some incite in dealing with the medical profession. First of all-it is only logical that there IS A CAUSE or REASON for your difficulties-that is a FACT. Second-don't accept "its all in your head" unless conclusive tests or evidence indicate otherwise. Many times that comes from a physician that doesn't know and doesn't care to proceed any further-a diagnosis but totally unhelpful (kind of like idiopathic, a professionally sounding way of saying "I don't know", which again is unhelpful. Also, keep in mind that, although you have under gone extensive testing, many of those tests were not as accurate or conclusive because they were not ordered with a particular focus in mind, in other words they were not looking for anything specific, or in a specific manner (dye involved, fasting, position, etc) to determine what might be singular to your situation. Just some thoughts.

@condorbirdy in reply to your earlier post, of having neurological issues Your situation sounds close to some of my own issues. I see a doctor from Germany. Very few people know of it, but it sounds to me like you could have something called juggler vien compressions. I don't want to get on here and tell you, that's what you have, but it could be an option.