Darling two years old has a fever old how to retreat repeatedly not to do

Two-year-old baby body repeated fever does not retreat, this may be caused by viral infection or bacterial infection, if the temperature exceeds 38.5 degrees, can be given antipyretic drug treatment, common ibuprofen, acetaminophen, etc., secondly can also take the child to the hospital blood test, clear cause according to the doctor's guidance treatment.