cupulolithiasis /kyo̅o̅′pyo͝olōlithī″əsis/ [L, cupula, little cup; Gk, lithos, stone] , a severe, long-lasting vertigo brought on by movement of the head to certain positions. Among the many possible causes are otitis media, ear surgery, and injury to the inner ear. In addition to extreme dizziness, signs are nausea, vomiting, and ataxia. There is no treatment except avoidance of the offending head positions. See also positional vertigo.
