The document discusses body temperature and fever. It notes that body temperature is normally between 36.5-37.5°C and is controlled by the hypothalamus. Temperature can be taken in different areas and varies depending on factors like age, sex, activity level and time of day. A fever is defined as a temperature above normal due to an increased set-point triggered by infection to fight it off. Fevers can be continuous, intermittent, or remittent depending on temperature patterns. Hyperpyrexia is a dangerous fever over 41.5°C that requires emergency treatment. Fever causes include infections, drugs, and medical conditions.