Vertigo on and off 4 years. Now having for 2 weeks. Had all ear tests, MRI, CT. Nothing found. Take valium, mech lizine, but it doesn't go away. Any?

Try balance center. In my area of the country we have a balance center which I tell my patients is like physical therapy for the inner ear. They show you excercises and positioning to move the little crystals or "rocks" in the inner ear that stimulate the little nerve endings that make you feel dizzy. This assumes that everything else is normal ie no menerie's or acoustic neuroma.