抄録
23 children with psychogenic hearing loss were clinically observed over a period of one year and the diagnosis, treatment and prognosis of this type of functional hearing loss is discussed. The results are summarized as follows; (1) Many of the patients showed approximately 50dB of sensorineural hearing loss varying from 30dB to scale out, with pure-tone audiometry. The most frequent type of audiomentric curve was ‘flat type’ and was found in 25 ears in the present series, while ‘saucer type’, which has been reported as the most common type in the functional hearing loss was found in only 2 ears.(2) Auditory brainstem response (ABR) revealed essentially normal hearing in all patients in the present study. This suggests that is the most useful diagnostic tool for this type of hearing loss.(3) The high incidence of type V Bekesy tracing obtained in 28 ears (85%) out of 33 affected ears indicates the usefulness of this test in diagnosing the psychogenic hearig loss.(4) In the following examination type V Bekesy tracing changed into either type I or type II in 8 ears (66.7%) out of 12 ears which showed a pure tone improvement.
