Fever. Body temperature increases as a protective response to infection

Fever. Body temperature increases as a protective response to infection and injury. An elevated body temperature (fever) enhances the body’s defense mechanisms, although it can cause discomfort. … Certain people (such as alcoholics, the very old, and the very young) are less able to generate a fever. https://www.msdmanuals.com/home/infections/biology-of-infectious-disease/defenses-against-infection