特異な神経耳科学的所見と経過を示した脳虚血発作の1例

A Case of Transient Ischemic Attack Showing Unusual Neuro-otological Findings and Progress

I．はじめに

　突然に発症した難聴を主訴とする症例は，いわゆる突発性難聴と診断され，原因不明のものが多い。しかし，なかには種々の全身的な疾患が背景にあり，難聴をきっかけとして重篤な疾患が発見されることもある。今回われわれは突然に発症した難聴，めまい，耳鳴を主訴として来院，入院し，複雑な経過をとり，最終的には椎骨脳底動脈循環不全と診断された症例を経験したので報告する。

　A 67-year-old male complained of dysacousis, dizziness and tinnitus. The examinations suggested intracranial disorders and paroxysmal dysacousis. These symptoms were relieved soon, but recurred and accompanied with central nervous signs. Circulatory insufficiency of the vertebral-basilar artery was diagnosed. In older persons, dysacousis and dizziness might be warning signs, even though peripheral signs were found. Thus, it is important to pay a special attention to these symptoms for prevention of cerebral apoplexy.