Thank you for your query on Healthcare Magic.
Your child is having a viral illness.
There will be high grade fever
for the initial 3 to 4 days inpite of giving Tylenol
I advise you to give Tylenol in prescribed dosage every 6th hourly depending on the presence of fever and do tepid sponding with lukewarm water if there is high grade fever after 10 minutes of giving Tylenol.
Give plenty of oral fluids to maintain hydration.
Give proper rest to the child.
And physical examination by the doctor is important to rule out the focus of any infection and to assess the child general condition.
Therefore I advise you to consult your Pediatrician
for the management of your child fever.
Hope I have answered your query, if you have any assistance in the future please feel free to consult me.
Wish your child a speedy recovery.