耳症状,ことにめまいを訴えた原田病例について

抄録

Harada's disease presenting with ear symptoms was studied. In Harada's disease presenting with vertigo, the following neuro-otologic findings were obtained. Monopedal standing was poor, and staggering was often noted in the stepping test. Nystagmus tests frequently showed rotato-horizontal or horizontal nys-tagmus, and ENG with the eyes closed or covered frequently demonstrated nystagmus with horizontal components. CP was frequently detected by the caloric test. No abnormalities were noted with the optokinetic nystagmus test or eye tracking test. These findings suggest that Harada's disease with vertigo is often caused by disorders of the peripheral vestibular system, especially the inner ear, Classification of the disease was attempted from the otologic view-point. Harada's disease with inner ear symptoms can be classified on the basis of equilibrium and auditory functions into type I (cochlear type), type II (vestibular type), and type III (cochleovestibular type).