I have had a terrible, kinda dizzy feeling in my head for several years. Had sinus surgery thinking that might help but no help. Seems to be on left front corner of my head, mostly. Am being seen by the VA. have MRI scheduled in a few days. Recently began feeling stiffness and aching in my lower body, legs knees, hips etc. But the feeling in my head is getting worse, hard to explain otherwise. Blood prsure a little high but heart is excellent otherwise. How would you diagnose or go about finding out wha s the matter? Am 89 years old.