This uncontrollable and constant abnormal input into the brain causes a disruption of balance function, and in many cases, a secondary cognitive dysfunction. The delayed onset and response to corticosteroids suggests an autoimmune factor. The symptoms of inner ear concussion may not even be apparent immediately post trauma, but gradually develop or increase over the ensuing weeks to months. Acute onset, often following a flu-like illness, of severe spinning vertigo. No hearing loss or tinnitus.
Recovery occurs gradually over a period of days to weeks.
Usually an inflammation of a vestibular nerve, the nerve that serves the balance mechanism in the inner ear. Must rule out impending neurologic disease. After that, they may interfere with compensation and recovery. A short course of corticosteroid and anti-viral medication often promotes recovery.