Thank you for choosing healthcaremagic.com and also for giving us this opportunity to clarify your doubts.
Well, in the first place, I would like to know if your son has anything else with the fever- any cough
, breathing difficulty, refusal to feed, irritability, inconsolable excessive cry, vomiting
, loose stools, painful urination, dribbling of urine, any skin wound or infections, rash
, throat pain, pain while eating, red eyes, swelling in the neck or armpit, ear secretions, etc.
All of the above symptomatology will direct us towards a specific and sinister cause for the fever. Sudden onset of high grade fever in an otherwise well happy child can definitely be viral infection. But the concern is that you cannot sit on such high grade fever for a long time. I would recommend you to watch for another day, now specially since the no. of fever spikes in a day have reduced. In case there is reduction in the fever spikes and child gets better and more happy, you might take it that it was a viral infection. But, in case the fever persists, I would recommend you to see your pediatrician
and get some basic blood tests done for fever.
I hope I have been successful in clarifying your doubts. I will be always available for any further doubts if at all. Take care and stay healthy.