I've been having migraine headaches since 10th
std, accompanied by dizziness. The migraine headaches have come down now, but dizziness persists. Generally, it occurs when I change position, either from sitting to standing, or lying down to getting up, or moving from a brighter to darker place, and vice versa. My vision becomes completely blank or hazy, and I lose balance. It lasts only for a matter of seconds. This has been going on for almost 8 years now, and nobody has been able to diagnose exactly what the problem is and suggest the right treatment. Kindly advise.