Dermatology Questions? Ask an Online Dermatologist.
Hi. Welcome to JustAnswer. My name is Uzair.I am reviewing your post and will get back to your reply momentarily.
Please attach picture of her lips here.
This seems to be charring and abrasion of lips due to repeated irritation. It is not cold sores. Nothing much to worry about. Apply thick layer of vaseline over her lips specially at night when she sleeps.
Let me know if you have further questions.
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Wish you good health.
I hope this is helpful.