Abstract
We report the clinical features of 22 patients with acquired bilateral vestibulopathy of unknown cause. All had either absent or markedly decreased responses to both caloric and rotational testing. They presented with dysequilibrium and imbalance, worse at night; most reported oscillopsia but none had associated hearing loss or other neurologic symptoms. Nine reported prior prolonged episodes of vertigo consistent with the diagnosis of bilateral sequential vestibular neuritis. Of the remaining 13, none had exposure to known ototoxins or a positive family history. Idiopathic bilateral vestibulopathy is an important cause of progressive imbalance in adults and should be considered even though hearing is normal.
- © 1989 by AAN Enterprises, Inc.
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