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Positional upbeat nystagmus on uprighting due to uvulo‐nodular infarction presenting as persistent vertigo and ataxia
Author(s) -
Yamaguchi Nanaka,
Shimada Ryuichi,
Kajimoto Yasuyuki,
Sugimoto Izumi,
Sakurai Yasuhisa
Publication year - 2019
Publication title -
neurology and clinical neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.125
0ISSN - 2049-4173
DOI - 10.1111/ncn3.12286
Subject(s) - medicine , nystagmus , supine position , vertigo , ataxia , benign paroxysmal positional vertigo , nausea , lesion , audiology , surgery , psychiatry
We report a patient with severe and prolonged vertigo and ataxia caused by infarction of the bilateral cerebellar nodulus and uvula. Vertigo and nausea persisted for 2 weeks, causing the patient to remain bedridden. The patient showed upbeat nystagmus (UBN) on upward gaze and upon uprighting from the supine position and did not exhibit apogeotropic nystagmus characteristic of central paroxysmal positional nystagmus. Isolated positional UBN may be specific to an uvulo‐nodular lesion, and persistent and marked vertigo suggests extensive damage to the bilateral nodulus and uvula.