Many people may feel chills, or sneezing or watery eyes before a fever, and some people may feel weakness in the limbs and a decrease in body immunity before a fever. There are various precursors to fever. If the patient has a clear history of external wind and cold, such as after getting wet or cold, he or she may experience nasal congestion, weakness of the limbs or muscle pain, pale skin, or even chills, chills, frequent sneezing, or a runny nose. If the body temperature is measured, it may not reach fever for the time being, but it will be found that the body temperature is on the rise. If the patient has an obvious wind-heat external sensation, which is usually referred to as fire, he or she may have a sore throat, feel hot breath coming out of the nose or mouth, dizziness and swelling, redness of the face, also accompanied by weakness of the limbs, poor mental state, etc. Therefore, when a patient has some of these symptoms, he or she may have a fever and it is best to measure it with a thermometer. If the body temperature does not exceed 38℃, you can drink more water and reduce the fever by physical cooling. If the temperature is said to be more than 38.5℃, you can choose to take some antipyretic drugs, such as acetaminophen tablets or ibuprofen extended-release capsules to reduce fever.