The condition may also be associated with blood-vessel inflammation (called vasculitis) in other areas of the body that can cause major organ damage in 15% of those affected or, in a small number of cases, even death.

However, one theory is that it is an autoimmune disorder in which the body's immune system mistakenly attacks tissue in the eye and ear.

Autoantibodies can be demonstrated in the blood of some patients, and these antibodies have been shown to attack inner ear tissue in laboratory studies.

Occasionally, if the disease has damaged blood vessels in the ear, cochlear implantation may be used to restore some sense of hearing.

[4] Cinnarizine is mainly used to treat nausea and vomiting associated with motion sickness, vertigo, Ménière's disease, or Cogan syndrome.