[Unilateral caloric hyporeflexis].

Seventy-one patients with an unilateral caloric hypofunction were examined in order to establish the correlation with cochlear function. We divised our cases following the subjective clinical syndromes. Groupe A (12 patients) with a history of only one crise of vertigo. Groupe B (13 patients) with repeated vertiginous attacks. Groupe C (21 patients) with a positional vertigo only. Groupe D (15 patients) with rather undefinite complaints. Groupe E (7 patients) with no vertigo at all. We believe to discern the following syndromes in our cases of unilateral vestibular hypofunction: 9 cases with a history of a unique vertiginous crises could be considered as a vestibular "neuronitis" in the narrow sense of the word. One case with recidiving attacks could be considered as a neuronitis, or as a Menière without cochlear disturbances. Some cases with a positional vertigo only or with very vague complaints could be considered as a neuronitis in a large sense.