DH has it, and has for probably 30 or more years. But strange as it sounds, his is caused by sugar. The Dr. said that some people, as they got older, the chemenical(sp) they use to process the sugar to white does some thing to the inner ear, if he eats a lot of sugar he gets so dizzy he can't walk, cut off the sugar for a month or so and he's back to normal(or as normal as he can be) so how much sugar are you eating, try it and see if that helps you, i know it was a life saver for us esp since when it started he was a truck driver, & would have to pull off the road until everything eased up. marrie we still keep dramaine in my purse