What long-term monitoring is needed for fever of unknown origin (FUO) that remains undiagnosed?

Updated: May 17, 2021
  • Author: Sandra G Gompf, MD, FACP, FIDSA; Chief Editor: Michael Stuart Bronze, MD  more...
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The 5%-15% of patients whose FUO remains undiagnosed, even after extensive evaluations, usually have a benign long-term course, but close follow-up and systematic reevaluation studies are essential to avoid missing potential etiologies.

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