<s>[INST] My 6 year old came home from school on Friday morning with 102 fever. The fever goes up and down. She vomits after she eats or even sips water or pedialyte. How long will this last? When should I take her to a doctor or a hospital. Two times today I thought she broke thru. And her fever dropped and she didnt throw up. But inevitably she would get sick again. Pls give us some advice. [/INST] Most if the time the cause fever in children is viral.But still its better to consult a pediatrician rather than trying out your own medication or the previous prescribed  medicine.  As the children grow,  there weight also increases and so the doses. Its always better to consult the doctor.  May be you are not giving the right dose. The only thing you can do is hydrate you kid.  Give him plenty of fluid in the form of juice, plain water,  rice water,  daal water. </s>