my 5 year old son has had a temperature of 41 for the last 4 days, woke up this mornin and its still 39.3, he has complained of a headache this morning, he isnt eating and im trying to push fluids as he has only urinated once in 24 hours, he isnt his usual self, he is more sleepy but when awake is alert and responsive
High grade fever persisting more than 4 days would need evaluation. Is he having anything else apart from fever like cough, diarrhea, nausea, pin while urination etc. to point towards a particular system. If he is urinating so less its probably because of deny Chat Doctor.  Give him lots of fluids like soup, coconut water or fluids hat he likes. Paracetamol for pain or fever as and when required. If Intake is still low or fever persists even after today as in the intensity does not go down better to get an evaluation to look for cause and subsequent blood tests.