<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi my five year old had a low fever from this morning and a high one this evening. i gave him baby tylenol and his fever dropped to 99. he woke up hungry during the night with a good appetite but his eyes cheek and lips were swollen. Later his eyes are looking a bit better not a whole lot but his upper lip is getting bigger. Please advise.  <response>: Hi...by what you quote I feel that your son might be having a viral illness with co-morbid allergic manifestation going on. As of now this seems like a simple angioedema, but it may progress. Be on the lookout for - respiratory distress strider red colored urine rash over the body especially lower limbs severe pain in the tummy. If these appear take him to the nearest emergency room as soon as possible. Regards - 