メニエール病重症例の疫学的調査研究 : 一側高度難聴例の検討を中心に

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Based on the data obtained from two Japan-wide surveys of Ménières disease (MD) conducted by the Ménières Disease Research Committee of Japan (1975-76) and the Vestibular Disorders Research Committee of Japan (1982-84), the epidemiological characteristics of unilateral severe MD were evaluated among 810 patients with definite MD. Of these 230 had severe MD, 48 of them had with profound hearing loss (UPHL group) with a pure tone average of the affected ear at 500, 1000 and 2000Hz of 70dB or worse, and 182 had markedly disabling attacks of paroxysmal vertigo for more than 3 years (UDV group).<BR>1) The sex ratio in the UPHL group was 1 : 1, but there were more females than males in the UDV group.<BR>2) Age at onset of MD peaked in the third decade in the UPHL group, and in the fourth decade in the UDV group.<BR>3) In the past history, otitis media was significantly more common in both the UPHL and UDA group than in non-severe patients.<BR>4) Insomnia was more likely to cause vertigo attacks in the UPHL group than in non-severe patients.