My four year old has had a fever every afternoon for the past 5 days--what is wrong?

Define fever: The normal variation in temperature follows a predictable pattern.Usually it is at its lowest around 4-6am and its highest at 4-6pm. (about a degree below or above average)if the kid's temp does not exceed 100, i wouldn't consider it fever.If it is >102 but present only in the afternoon with no other symptoms, it is likely something minor (viral) that should end in a day or two.If worried get seen.