Etiologies of sensorineural hearing loss.

A retrospective study was done in 1,074 patients with sensorineural hearing loss (SNHL) as main symptoms who attended the Neuro-otology clinic, Department of Otolaryngology, Siriraj Hospital, from January 1983 to December 1987. The significant etiologies were determined in only 40% of the patients i.e sudden hearing loss (8.57%), Meniere’s disease (6.42%), syphilis (5.59%), congenital hearing loss (3.52%), inner ear trauma (3.45%), systemic diseases (2.98%), CPA tumours (2.88%), ototoxicity (1.68%), presbycusis (1.02%), viral infection (0.93%), bacterial infection (0.93%), miscellaneous (0.47%), intracranial tumours (0.19%),respectively.