title: Delayed vestibulopathy after heat exposure.
abstract: Even though dizziness is a common symptom of heat illness, comprehensive evaluation of the vestibular function has not been available in this potentially life-threatening disorder. Three patients developed vertigo about a week after heat exposure. Evaluation showed bilateral impairments of the vestibulo-ocular reflex during head impulses and the signs of vestibulocerebellar dysfunction that included spontaneous downbeat nystagmus, gaze-evoked nystagmus, and positional downbeat nystagmus. Exposure to excessive heat may give rise to delayed vestibulopathy by damaging the vestibulocerebellum.
authors.affiliation: Department of Neurology, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Korea.
authors.forename: Ileok
authors.initials: I
authors.lastname: Jung
authors.affiliation: Department of Neurology, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea.
authors.forename: Seo-Young
authors.initials: SY
authors.lastname: Choi
authors.affiliation: Department of Biomedical Laboratory Science, Kyungdong University, Goseong, Kangwon-do, Korea.
authors.forename: Hyo-Jung
authors.initials: HJ
authors.lastname: Kim
authors.affiliation: Department of Neurology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, 173-82 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Korea. jisookim@snu.ac.kr.
authors.forename: Ji-Soo
authors.identifier: http://orcid.org/0000-0002-1508-2024
authors.initials: JS
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D001921:Brain / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D018882:Heat Stress Disorders / Q000150:complications* / Q000000981:diagnostic imaging; D006358:Hot Temperature / Q000009:adverse effects; D006801:Humans; D008297:Male; D009759:Nystagmus, Pathologic / Q000000981:diagnostic imaging / Q000209:etiology; D012027:Reflex, Vestibulo-Ocular; D013997:Time Factors; D014717:Vertigo / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology*
keywords: Cerebellum; Head impulse test; Heat illness; Heat stroke; Vestibulo-ocular reflex