<s>[INST] What could have caused bruising around my son's lips?  He had about a half an inch of what seemed to look like bruising all the way around his top and bottom lips.  It did not seem to bother him the slightest bit but I feel as though it came out of nowhere and was gone within a few days. [/INST] Hi Dear Welcome to the HCM,apply some moisturiser cream like desowen lotion. it will in few days.Hope the query is answered.thanks </s>