title: Wernicke's encephalopathy presenting with upbeating nystagmus.
abstract: The case of a 49-year-old woman with Wernicke's encephalopathy is described, in which primary position upbeating nystagmus was the chief ocular sign. Although there was no history of excessive alcohol consumption, Wernicke's encephalopathy was diagnosed on a background of anorexia nervosa. The diagnosis was supported by the patient's symptomatic and clinical recovery following thiamine therapy.
authors.affiliation: Department of Opthamology, Prince of Wales Hospital, Sydney, Australia.
authors.forename: Shanel
authors.initials: S
authors.lastname: Sharma
authors.forename: Peter M
authors.initials: PM
authors.lastname: Sumich
authors.forename: Ian C
authors.initials: IC
authors.lastname: Francis
authors.forename: Matthew C
authors.initials: MC
authors.lastname: Kiernan
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Spira
mesh_terms: D000856:Anorexia Nervosa / Q000150:complications; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008875:Middle Aged; D009759:Nystagmus, Pathologic / Q000175:diagnosis* / Q000209:etiology*; D014899:Wernicke Encephalopathy / Q000150:complications* / Q000175:diagnosis*