Fever occurs when a child's body temperature is higher than normal. To avoid dangerous complications caused by fever, parents need to know how to measure their child's temperature and how to handle it properly when the child has a fever.

A healthy body maintains its temperature within a narrow range using thermoregulatory mechanisms.

Energy is constantly produced in the human body through metabolism. Body temperature balance is an important condition for the normal functioning of enzymes involved in the metabolism process. Monitoring body temperature helps detect early abnormal changes in the body, so that timely treatment can be provided.