Hi and thanks for the query.
It might just be a simple flu
, but you need to be concerned about the fever as children of this age are prone for febrile seizures
I suggest you take him to the hospital as soon as possible to find the cause of the fever and get specific treatment. Meanwhile please keep the fever down with paracetamol
appropriate dose every four hours and brufen
only every 6 hours at the most. If the fever doesnt come down inspite of this, you need to do sponging with tepid water. Give lots of fluids to compensate for fluid loss during high fever
Hope your child gets well soon. Take care.