title: Acoustic neuroma presenting as exercise-induced vertigo.
abstract: We present two subjects with previously undiagnosed acoustic neuromas who complained of vertigo whenever they ran. One had normal hearing while the other already had a unilateral sensorineural deafness. Hyperventilation for 30 seconds provoked an ipsilateral beating nystagmus and reproduced the vertiginous sensation in both subjects. Hyperventilation is a simple bedside test that should be performed when assessing a subject with vertigo or when there is a clinical suspicion of an acoustic neuroma.
authors.affiliation: Department of Otorhinolaryngology, Tan Tock Seng Hospital, Singapore, Republic of Singapore. nelson_chee@ttsh.com.sg
authors.forename: Nelson Wang Cheng
authors.initials: NW
authors.lastname: Chee
authors.forename: Helen Mui Huey
authors.initials: HM
authors.lastname: Tong
mesh_terms: D000328:Adult; D001301:Audiometry, Pure-Tone; D015444:Exercise; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009464:Neuroma, Acoustic / Q000150:complications* / Q000175:diagnosis; D014717:Vertigo / Q000209:etiology* / Q000503:physiopathology