若年者の機能性難聴
心因性難聴と健診難聴
1992 年 2 巻 2 号 p. 215-222
詳細
1992 年 2 巻 2 号 p. 215-222
Juvenile functional deafness is classified as psychogenic deafness and examination deafness which is defined as a hearing impairment only shown on audiogram in school without complaint of deafness.
Thirty eight cases of functional deafness who visited in recent 10 years were studied. Females are more frequent rather than males and the male/female ratio is about 1: 2. The number of bilateral cases are 32 and the unilateral cases are 6. Pure tone audiograms showed a flat-shaped sensorineural hearing loss in 57 ears (84.1%).
Békésy audiogram showed type V of Jerger's classification in 43 ears (74.1%). ABR and evoked oto-acoustic emission (e-OAE) recordings were useful for diagnosis of functional deafness. And especially in unilateral cases, these examinations were valuable tools in differential diagnosis of functional deafness from sudden deafness.
