<s>[INST] My 4-year-old has had a 100-103 degree fever since this past Thursday. The fever fluctuates depending on time of day (gets higher as the day progresses; 103-104 at night). He also has pain on the lower right side of his abdomen. Other than those symptoms and sleeping slightly more than usual, he has been acting normal - eating, drinking, going to the bathroom, and playing fine. [/INST] Hi... by what you say I feel that your kid is going through a viral illness. You need not worry about it. I will explain to you how a viral illness behaves so that you can be more confident. 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>