I Have For About 40 Yrs Had Times When I

I have for about 40 yrs had times when I would feel uneasy usually after driving and then becoming busy when I have gotten out of the car. It starts in my lower legs and slowly climbs to my head and it will not pass until I sit or lie down with my head over the bed. It can last as long as an hr. and will not go away until I stop moving . I am 78 yrs old now and it is coming on more often and is not connected always with driving. Jim