1. Causes and symptoms of fever in children Fever in children means that the body temperature exceeds the normal range, usually when the body temperature is higher than 38°C. There are many causes of fever in children, including infection, allergies, drug reactions, etc. Common symptoms include elevated body temperature, headache, muscle aches, and loss of appetite. 2. How to correctly measure children\’s body temperature. It is very important to correctly measure children\’s body temperature, which can help doctors determine whether the child needs treatment. Temperature is usually taken orally, axillary, or anally, but not in different years