<s>[INST] 9 year old son just came home from first day of school complaining of sore throat, low grade fever (99) red bumps on inner knees, lower legs, some on his arms and on the palms of his hands... he said they are pretty itchy, they almost look like puss filled pimples. he looks run down [/INST] Thank you for asking on Chat Doctor. Most of the sore throat in child Chat Doctor.  Both of these infections are self limiting and recovery occurs spontaneously in 5-7 days irrespective of the use of antibiotics. It is often associated with fever or pus over tonsils. Your child probably has such a condition. I am assuming that the child has been immunized properly and hence am not considering diphtheria which could also have been a cause. Gurgling with lukewarm water will give him relief. Hope that helps. Feel free to revert in case of further queries if any. </s>