Hi...Thank you for consulting in Health Care magic.
What you r son is experiencing is called febrile
delirium and is common in
high fever in kids. The behavioral abnormality will settle by itself once fever settles.
Fever of one day without any localizing signs could as well a viral illness. Usually rather than fever, what is more important is the activity of the child, in between 2 fever episodes on the same day.
If he is active and playing around when there is no fever, it is probably and it doesn't require antibiotics at all. Once
viral fever comes it will there for 4-7 days. So do not worry about duration if the kid is active.
You can treat fever with
Paracetamol at 15mg/kg/dose every 4-6th hourly if fever is > 100F.
Hope my answer was helpful for you. I am happy to help any time. Further clarifications and consultations on Health care magic are welcome. If you do not have any clarifications, you can close the discussion and rate the answer. Wish your kid good health.
Dr. Sumanth MBBS., DCH., DNB (Paed).,