My son complained of headaches...took him to his doc about a week ago-says well give him a strong antibiotic for a sinus infection and some medicine for allergies, if it doesnt get better in a month he needs m.r.i.     he vomitted once about 6 days ago   we held back on the antibiotic had an ok appetite but not his normal self, tired and a little distracted. yesterday he starts having diarrhea, stomach pains, and the same complaints of a headache. Last night he vommited multiple times and diarrhea.  managed to make it through the whole day without vommitting drank some and ate some soup.  thought we were clear..he just vommitted again seems to vommit at night, he had a fever earlier and stomach pains,  I have been feeding him ice chips to keep him somewhat hydrated    planning to take him to doctor tomorrow    any clue whats happening?
HI, thanks for using Chat Doctor Sinus infection can be associated with headaches, but they would normally be additional symptoms such as nasal congestion, runny nose, post nasal Chat Doctor.  Some of these are usually present. Vomiting and diarrhea are commonly due to infection of the gastrointestinal tract. This can be viral or bacterial, headache can occur. You should continue with the ice chips though using a fluid with electrolytes would be better to give him back both. e.g. mediate or another oral rely