抄録
A 37 year old man, suffering from Lermoyez syndrome, maintained a diary of his vestibular and cochlear symptoms for a year and four months. During this time, he had received caloric tests five times, and audiometry 34 times. As a result, he found that after attacks of vertigo, his hearing ability recovered immediately. This was confirmed by audiometry. However, even during periods without vertigo, the caloric response of the suffering ear was decreased. Of the 17 cases of Lermoyez syndrome reported in Japan, males outnumber females, and the peak age range was for those patients in their thirties. We speculate that the rupture site of the membranous labyrinth is important in the etiology of this syndrome.