Familial congenital vestibular areflexia.

Three cases in one family are presented with oscillopsia due to vestibular areflexia, but without hearing loss. There was no history of other neurological or otological diseases (including infectious diseases) or use of neuro-ototoxic drugs. Laboratory tests, including tests for autoimmune diseases, were undisturbed. Petrosal radiographs and brain CT scans were normal. The pedigree suggested autosomal recessive inheritance.