A Case of Bilateral Vestibular Neuronitis with Blurred Vision during Head and/or Body Movements (Jumbling Phenomenon)

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In Japan there have been few case reports of bilateral vestibular neuronitis fulfilling the diagnostic criteria of vestibular neuronitis drafted by the Vestibular Disorders Research Committee of Japan in 1980. We examined a 43-year-old female with bilateral vestibular neuronitis who had blurred vision during head and/or body movements. Severe loss of bilateral vestibular functions was noted on caloric and visual vestibulo-ocular reflex (V-VOR) tests.Moreover, complete bilateral loss galvanic body-sway was recognized on 0.5mA galvanic stimulation. However, there was no hearing impairment and no central nervous system disorder. On subsequent neurotological examinations, we found that her caloric responses and VOR-gains recovered as her dizziness disappeared. However, her blurred vision and loss of galvanic body-sway persisted. These findings suggest that the battery of V-VOR-gain, caloric and galvanic body-sway tests are of great value in follow-up studies of vestibular neuronitis.
耳鼻咽喉科臨床学会の論文