But "normal" body temperature varies from person to person. or aspirin to help relieve head and body aches and lower your temperature.
A fever is a body temperature of 100.4 F or greater. Read about causes of fever in adults, symptoms, treatment, medications that may cause fevers, and different.
An adult with a slight fever may feel like they've been hit with a semitruck, but medications like acetaminophen and ibuprofen to reduce fever.