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  • Title: Clinical characteristics of inferior vestibular neuritis.
    Author: Chihara Y, Iwasaki S, Murofushi T, Yagi M, Inoue A, Fujimoto C, Egami N, Ushio M, Karino S, Sugasawa K, Yamasoba T.
    Journal: Acta Otolaryngol; 2012 Dec; 132(12):1288-94. PubMed ID: 23039337.
    Abstract:
    CONCLUSIONS: Inferior vestibular neuritis (IVN) is a relatively minor subtype of vestibular neuritis (VN) and its clinical characteristics are unique. OBJECTIVES: To clarify clinical characteristics of IVN in comparison with conventional VN. METHODS: This was a retrospective case series review. Caloric responses and cervical vestibular evoked myogenic potential (cVEMP) responses were measured in 71 patients with VN. The patients were classified into three groups: (1) IVN group, who showed only asymmetrical cVEMP responses; (2) superior VN (SVN) group, who showed only asymmetrical caloric responses; (3) total VN (TVN) group, who showed asymmetrical responses in both tests. The clinical records of time course of subjective symptoms (duration of attack, duration of hospitalization, and time to remission) were reviewed and other profiles (age, sex, affected side, acute symptoms, and sequelae) were evaluated. RESULTS: Of the 71 patients with VN, 13 (18%) were classified as having IVN. The mean age and time to remission of patients with IVN (44.2 ± 4.8 years, 0.9 ± 0.5 months) were significantly lower and shorter, respectively, than those of patients with TVN (57.3 ± 2.5 years, 4.9 ± 4.7 months). There were no significant differences in other symptoms and profiles among the three groups. No patients with IVN showed benign paroxysmal positional vertigo as a sequela.
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