last proper three days fever was on 23rd dec and then it recovered within 4days. but again fever has come yesterday and it went upto 99.4 and then I gave syrup sumol , within 10min normal temp. how is it possible?

A. Maybe it is associated with viral you should get examined by the doctor for better clarity once if needed you can get a blood test done for your child as that is going to give you a very clear picture about the situation and treatment is required