Types of Fever of Unknown Origin (FUO) • Fever > 38.3 C (101 F) on at least 2 occasions • Duration of fever > 3 weeks • Without an established etiology despite an “appropriate intelligent” investigation - History, Labs, Imaging, Microbiology Dr. Uday Gulati @udaygulati #FUO #Fever #UnknownOrigin #workup #diagnosis #initial #definition