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What is fever?

What is fever?

Fever is a medical sign characterized by an increased body temperature above the normal range. Fever is not considered medically significant until body temperature is above 38°C.

Fever is caused by the release of certain chemicals by the immune system, usually as a result of an infection or inflammation. Not every fever needs medical attention, but in young children, if the temperature continues to rise or if there are other worrying symptoms, a doctor should be consulted.