[Borderline cases of sudden deafness and so-called vestibular dysfunction].

Forty-seven patients (31 male, 16 female) have been treated at the ENT University Clinic of Marburg during the last 13 years for sudden sensorineural hearing loss combined with disorders of equilibrium. The epidemiological data, history, audiological and electronystagmographic findings of those patients with cochleovestibular lesions are reported. The results of follow-up examination are compared with those of the patients who suffered from sudden deafness and vestibular neuronitis. In patients with combined lesions, special attention was paid to any correlation between the hearing loss and the dysequilibrium, on the one hand, and the restitution of both functions, on the other. We discuss how these patients with cochleovestibular lesions may be distinguished from those with Menière's disease.