Res Vestib Sci.
2009 Jun;8(1):45-48.
A Case of Selective Inferior Vestibular Neuritis Showing Normal Caloric Test
- Affiliations
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- 1Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Soonchunhyang University, Bucheon, Korea. ljdent@schbc.ac.kr
- 2Department of Neurology, College of Medicine, Soonchunhyang University, Bucheon, Korea.
Abstract
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Vestibular neuritis is commonly diagnosed by demonstrating of peripheral vestibular failure as a unilateral loss of the caloric response. It is a sudden, spontaneous, unilateral loss of vestibular function without simultaneous hearing loss or brainstem signs. In most patients with vestibular neuritis, the process is thought to involve the superior vestibular nerve. Very rarely, vestibular neuritis involves only the inferior vestibular nerve. We experienced a 56-year-old male with inferior vestibular neuritis. The patient had vertigo and spontaneous nystagmus, but a normal caloric test. Brain magnetic resonance imaging was normal, while vestibular evoked myogenic potentials had absent amplitudes on the lesion side. The patient was thought to suffer from pure inferior nerve vestibular neuritis.