Thanks for posting your query here.
I understand that his temperature settles only briefly following paracetamol
High grade fever
usually suggests some infection is going on, could be virus or a bacteria. Does he have any associated symptoms like cold, cough
, urine problems (crying while passing urine) or pulling his ears etc?
I am bit concerned that he is not interested in eat or taking anything. This makes him prone to have dehydration
and less energetic.
I would suggest that he needs to be reviewed by a Pediatrician
to find out what infection he has got and adjust his treatment appropriately. He may need further anti-fever medicines and antibiotics if doctor feels it is needed.
Please see a Pediatrician as soon as possible. Wishing your son a speedy recovery.
Dr Tejas Shah