Meniere's Disease -

Meniere's disease is a disorder of the inner ear that causes episodes in which you feel as if you're spinning (vertigo), and you have fluctuating hearing loss with a progressive, ultimately permanent loss of hearing, ringing in the ear (tinnitus), and sometimes a feeling of fullness or pressure in your ear. In most cases, Meniere's disease affects only one ear.

Meniere's disease can occur at any age, but it usually starts between the ages of 20 and 50 years.

Symptoms -

Recurring episodes of vertigo.
Hearing loss. Hearing loss in Meniere's disease may come and go, particularly early on.
Eventually, most people have some permanent hearing loss.
Ringing in the ear (tinnitus). Tinnitus is the perception of a ringing, buzzing, roaring, whistling or hissing sound in your ear.
Feeling of fullness in the ear.
People with Meniere's disease often feel pressure in the affected ears (aural fullness) or on the side of their heads.

Causes -

Illustration showing inner ear and balance Inner ear and balance The cause of Meniere's disease isn't understood. One popular theory that hasn't been proved is that Meniere's disease appears to be the result of the abnormal amount of fluid (endolymph) in the inner ear. This often shows on autopsies, but it's not clear that it causes the episodes.
Factors that affect the fluid, which might contribute to Meniere's disease, include:
Improper fluid drainage, perhaps because of a blockage or anatomic abnormality
Abnormal immune response
Allergies
Viral infection
Genetic predisposition
Head trauma
Migraines