Meniere's disease can cause severe dizziness, a roaring sound in your ears called tinnitus, hearing loss that comes and goes and the feeling of ear pressure or pain. It usually affects just one ear. It is a common cause of hearing loss. Scientists don't yet know the cause. They think that it has to do with the fluid levels or the mixing of fluids in the canals of your inner ear. Symptoms occur suddenly and can happen as often as every day or as seldom as once a year. An attack can be a combination of severe dizziness or vertigo, tinnitus and hearing loss lasting several hours. There is no cure.