<s>[INST] My sister has a 3yr9mths old daughter..she fell ill since last thursday, and we couldnt seem to find out what really happened, cos at one time she would feel normal, and then her body temperature rose all suddenly! We tried going to hospitals & clinics but all they did was gave her some medicine, which doesnt work at all. What is really happening to her? We are very worried, as we are absolutely suprised because she has never been like this. We dont think this is a normal illness..HELP! [/INST] Hi... Thank you for consulting in Chat Doctor. Fever of few days 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 the kid is active and playing around when there is no fever, it is probably viral illness 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. Paracetamol can be given in the dose of 15 mg/kg/dose (maximum ceiling dose of 500 mg) every 4-6th hourly that too only if fever is more than 100F. I suggest not using combination medicines for fever, especially with Paracetamol. Regards -  </s>