Which symptoms suggest a miscellaneous cause of fever of unknown origin (FUO)?

Updated: Mar 01, 2018
  • Author: Sandra G Gompf, MD, FACP, FIDSA; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

Historical clues to miscellaneous causes of FUO are as follows:

  • Prolonged immobility, car trips, flights: Thromboembolic disease
  • Ethanol abuse: Alcoholic hepatitis, cirrhosis (endotoxemia of portal circulation)
  • Medication list review: Drug fever
  • Anticoagulant use: Hematoma, occult hemorrhage

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