FeverFever is an increase in the average normal core temperature, often as a result of inflammation. It is a natural reaction of the body to defend itself against bacteria, viruses and other pathogens.
In the morning we have the lowest body temperature, 35.8°C in the afternoon the highest, 37.4°C.
Above 38.5°C, we speak of a fever. Fever above 40°C is dangerous.
Sufficient drinking a little yucky and cooling a little helps.