Fluctuating Hearing Loss
1982 Volume 28 Issue 5Supplement3 Pages 907-915
Details
1982 Volume 28 Issue 5Supplement3 Pages 907-915
Forty seven ears from 20 males and 21 females which demonstrated fluctuating hearing impairment without vertigo were collected by our collaborators in Japan and the type of hearing loss was investigated. The ears which showed the fluctuation of hearing level only in the range of low frequencies were 21.3% and in the middle and all frequencies were 36.2% and 40.4%, respectively. Only one ear (2.1%) showed the fluctuation in the range of high and low frequencies. Therefore, all ears which sohwed the fluctuation in the hearing level were accompanied with the change of low tone frequencies.
Six patients revealed the same type of hearing fluctuation in both ears. However, each ear showed the independent fluctuation of hearing level.
The cases accompanied with tinnitus and without dizziness were 86.8% and 84.1%, respectively.
