Again, it can many different causes. I went through all types of testing. Finally, a physical therapist determined that there was a slight ocular delay between my eyes and my inner ear. Physical therapy exercises helped me get through it. In my case, it is much better to be the driver of a car rather than the passenger, because the body inherently knows what to turning motions to expect. Cash doctors only since my healthcare plan was Obama-nated. Best of luck.