body temperature range pyrexia
A fever is a rise in body temperature. It's usually a sign of infection. The fever itself is generally harmless and probably helpful. Fevers usually don't need treatment. The average body temperature is 98.6 F (37 C).But normal body temperature can range between 97 (36.1) and 99 (37.2) or more.Your body temperature can vary depending on how active you are or the time of day. Generally, older people have lower body temperatures than younger people.evers usually don't need treatment. The average body temperature is 98.6 F (37 C). But normal body temperature can range between 97 (36.1) and 99 (37.2) or more. Your body temperature can vary depending on how active you are or the time of day.