Children with a cold may experience recurrent low fevers. In children, colds are generally caused by viral infections, such as rhinoviruses, common coronaviruses, etc. The symptoms include fever, runny nose, sneezing, coughing, sore throat, etc., and the duration of the illness is mostly three to five days, usually not exceeding a week. Therefore, during the course of the illness, the symptoms of a cold may recur. During the illness, fever-reducing measures are taken, such as physical cooling and medication. However, after the fever subsides, it may recur, which is a normal phenomenon.