Résumé
68 patients with vestibular neuritis were studied epidymiologically, local criteria for the diagnosis based on clinical findings and results of investigations were established. Result showed that the highest incidence of the disease was encountered at age range group of [30-49] years and it affect males at a higher age range group than females. A study of the seasonal incidence of the disease revealed a peak rise to occur during the season of maximum uprise of viral infection [winter and spring], yet history of preceeding upper respiratory tract infection was rather insignificant. The main presenting symptoms of the disease were; vertigo which was complained of by all patients, associated nausea [52.4%] and vomiting [33.8%] and tinnitus in [42.6%] of patients. Hearing loss was not regarded as a diagnostic criterion of the disease. With the exception of nystagmus which was found to be present in [55.9%] of patients there was no other detectable neuro-otolgical abnormality. Blood count and blood biochemistry were within normal in all patients with vestibular neuritis. Audiological investigations showed normal pure tone audiograms to be present in [86.7%] of cases, and electronystagmography including caloric testing in [80.8%] of cases. Abnormal electroencephalographs was seen in [10.3%] of cases in the form of scattered slow waves [5.9%] and scattered spikes [10.3%] of cases. Abnormalities in radiological examination of the cervical spine was seen in [20.6%] of cases. Other investigations including C.T. scan were within normal. Results were discussed and criteria of diagnosis were established