This is about the medical condition. For other uses, see
Fever (disambiguation). Fever (also known as pyrexia, or a febrile response from the
Latin word
febris, meaning fever, and archaically known as ague) is a frequent
medical symptom that describes an increase in internal
body temperature to levels that are above normal (the common oral measurement of
normal human body temperature is 36.8±0.7 °C or 98.2±1.3 °F). Fever is most accurately characterized as a temporary elevation in the body's thermoregulatory set-point, usually by about 1–2°C. Fever differs from
hyperthermia, which is an increase in body temperature over the body's thermoregulatory set-point (due to excessive heat production or insufficient
thermoregulation, or both).
Carl Wunderlich discovered that fever is not a disease but a symptom of disease.
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