Abstract
Fifty patients with “juvenile unilateral severe sensori-neural hearing loss” treated in the authers' clinic during 7 years from 1971 to 1977 were studied. By investigating their clinical histories and the results of hearing and caloric tests, the following findings were obtained.
1) 51% of the patients showed canal paresis of the affected side by Hallpike's caloric test, though few patients complained of vertigo.
2) Regarding to the etiologic factors, the cases with the past history of mumpus and measles showed a high incidence. The patients with mumpus history showed more unilateral hearing loss than “juvenile bilateral hearing loss with obscure etiology”.
3) Four cases showed hereditary problems.
4) In some cases, labyrinthitis due to otitis media and malformation of the labyrinth could not be excluded as the causative pathologic factors.
5) In this investigation “juvenile unilateral severe sensori-neural hearing loss” was characterized by “childrens specifity” rather than a specific pathologic factor.
