my toddler is 18 months old, He has been suffering from frequent fever (24 days once) for the past 1 year his body temperature goes to 104 degrees at fever last to 3 to 4 days on the other days he totally full active we went so many hospitals taken too many blood test,urine test,culture test,pid test everything was normal we can't fight want happening in his body even doctors also not find the reason for fever, 😔