<s>[INST] My son woke up this morning and his face is very swollen. The swelling has changed the way his face looks. His normally round eyes look eurasian and his face has taken on a more mongoloid look. His lips are also very swollen - as if he was stung. Last night he was given a little cough syrup for children and ate some toast, cheese and had some mustard. He has no known allergies. He says that he feels alright, and there is no pain in his ears, throat, mouth eyes or nose. Should we take him to see a doctor? [/INST] Hi Thanks for using Chat Doctor. It sounds more like an allergic reaction.Maybe he is allergic to some food which he had last night, or he was stung by some insects overnight. As long as there is no problem with breathing which is seen in severe allergic reaction, I would reassure your child and give him antihistamine if you have it at home and then take him to your doctor. It is advisable to have antihistamine at home in the first aid box but check the expiry date now and then. </s>