I have a 13 month old son that is now on his fourth fever (all have lasted a week before he was put on medicine), the doctors have put him on a different type of antibiotic each time. The first two times they said he had an ear infection, the last two times no one could give me a reason. He had a "fever seizure" with his last one. There seems to be a pattern, they put him on antibiotics, the fever goes away, the antibiotics stop, within two weeks the fever returns. He had blood work that came back normal, I want to demand further testing. I'm I right in my concern or am I just over reacting? What could it be? What should I ask his doctor to do if the fever returns?