Inferior Vestibular Neuronitis: Case Report
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Keywords
Acute Vestibular Syndrome, Spontaneous Torsional Nystagmus, Inferior Vestibular Neuronitis, Video head impulse test (v-HIT), Cervical Vestibular evoked myogenic potential (c-VEMP)
Abstract
Vestibular neuronitis is a cause of acute vestibular symptoms which occurs commonly and affect primarily the superior branch of the vestibular nerve, giving rise to distinctive clinical features. Occasionally, cases of Inferior Vestibular Neuronitis (IVN) presenting with vertigo, unsteadiness and spontaneous downward torsional nystagmus, has been proposed in literature. This nystagmus has received even less attention with regard to pathophysiology. Due to the low frequency of Inferior Vestibular Neuronitis and its unusual presentation as a peripheral vestibulopathy, we should be aware for signs and symptoms with the aim of performing an accurate diagnostic workup and offer appropriate treatment.
