<s>[INST] My 2 year old son has got swelling on his forehead in between eyebrows up towards hair line, he is not having any pain and the swelling is slightly red. He did not had any injury or bump on his head for the swelling 2 occur.could u please let me know the reason of the swelling and how can it be treated?? [/INST] if the swelling is red, a cellulitis should be ruled out. absence of pain is unusual. an increase in size will warrent imaging study after physician review </s>