<s>[INST] My son is 5 years old Sunday he complained of a belly ache he has severe constipation I gave him an enema and he went of course after that then he was fine. around 8 o clock that night he started to run a very high temp. early Monday morning he vomited several times. fever has continued and now he is complaining both sides of his neck hurts. What could be going on with him? Thanks [/INST] HI... This looks like a viral illness. Fever and neck pain is not related to constipation. But vomiting could be due to constipation. 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. I suggest you give Paracetamol at the appropriate dose and plenty of fluids to Chat Doctor. Regards -  </s>