Stan, I don't feel like what happened on the road was mere coincidence. Assuming you drive normally, the probability for a coincidence is very small, and I think there must be some link with your disease. The link may be direct (e.g. meds' short term chemical effect), or all the way to very, very indirect (e.g. unconsciously refusing to know more about your disease, and "producing" symptoms). The only way I know to build some logic out of such a mess of causes and effects is to systematically write what happens to you, just facts. After a significant number of weeks, you will probably notice repetitive sequences, and then you are through. Let me give a simple example, also related to visits to the neurologist. My symptoms progressively increase during the week before the visit, and suddenly decrease when he opens the door of the waiting room. When I tell it that way, identifying cause and effect is very easy. But it took me several years (maybe ten visits) to understand that loop. We have all learnt how Sir Isaac Newton discovered the universal law of gravity when watching an apple fall from the tree. Had he been inside the apple, he would have discovered nothing !