Fever of unknown origin.
Fever of unknown origin (FUO) is defined as a temperature elevation of 101 degrees F (38.3 degrees C) or higher for 3 weeks or longer, the cause of which is not diagnosed after 1 week of intensive in-hospital investigation. This article discusses the causes, diagnosis, and treatment of FUOs.
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Infectious Disease Division, Winthrop-University Hospital, Mineola, New York, USA.
D005335:Fever of Unknown Origin / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D006801:Humans; D009369:Neoplasms / Q000150:complications; D012216:Rheumatic Diseases / Q000150:complications