Pyrexia

Dr Daniel J Bell et al.

Pyrexia (or fever) is a clinical sign, indicated by an abnormally elevated core body temperature, which is defined by several medical societies as ≥38.3°C (≥101°F). The temperature elevation may be persistent or episodic. The commonest cause of fever is infection, in one study of hospital inpatients accounting for ~70% cases 1. Other frequent causes are inflammatory disease, malignancies and medication-related fevers. Pyrogenic is the term used for anything that causes pyrexia. When the cause of a fever remains unexplained it is termed a pyrexia of unknown origin (PUO).

Pathology

Etiology

rare:

Share article

Article information

rID: 67278
Section: Signs
Synonyms or Alternate Spellings:
  • Pyrogenic
  • Fevered
  • Feverish
  • Febrility
  • Febrile
  • Pyrexias
  • Fevers
  • Pyrexial
  • Ague
  • Fever

Support Radiopaedia and see fewer ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.