Panicking! My LG is four months old and has woken up with this mark on her lip.
I suspect she may be teething as her cheeks are quite red and she was quite unsettled last night. She’s also chewing on everything and drooling like a tap! But I’ve only just noticed this mark on her lip.
Neither me nor my partner have any cold sores and we don’t let people kiss her on the face or hands, so I don’t know where she may have gotten it if it is a cold sore. She seems totally fine in herself, not ill or feverish.
Thanks! :)