Dd is nearly 3 and has had dry chapped lips for a couple of days which we have been treating with lipbalm, as you do, but she's woken up this morning with what looks like it might be a cold sore! I have never had one so I don't know anything about them but she was with her dad yesterday and on Sunday but I've no idea if he has them as I wouldn't be able to tell as he has quite a big beard.
Are coldsores always caught from someone else or can they just appear? I'd hate to think she's stuck with them for ever :(