Prevalence of definite cases of Meniere's disease in Niigata Prefecture

Prevalence of definite cases of Meniere's disease (M.D.) in Nishikubiki district, the western part of Niigata prefecture, was investigated. All of the hospitals and clinics were surveyed between Jan. 1 and Dec. 31, 1994. Definite cases of M.D. was defined by the criteria proposed by the Meniere's Disease Research Committee of Japan. There were 13 definite cases (12 cases reported from ENT clinics and 1 case from a general practice). Surveying all ENT clinics was quite useful for evaluating the prevalence of definite cases of M.D. in a restricted area. Prevalence was 23 per 100000.