Baby suddenly has a fever without other symptoms to do

Fever to take timely cooling measures, if the temperature is lower than 38.5 degrees can be physical cooling, wipe the baby's body with warm water, drink more water, supplement water, once the temperature exceeds 38.5 degrees, but also need to add antipyretic treatment, if the high fever does not return, timely go to the hospital to see a doctor, find out the cause of treatment.