Our expert says:
It is almost a kind of contact dermatitis (eczema) they develop due to the licking, which is a habit caused by an episode of dry lips. Just check that she is not getting in an overdose of vitamin A via vitamin supplements that as this can cause very dry lips. You could also check her iron levels as underlying vit B and iron deficiency could also be the culprit. Try lanolin based lip ice and ask your doctor to prescribe 1% (very light) hydrocortisone cream only for a few days (cortisone on the face long term can cause peri-oral dermatitis). Try to motivate her to stop the habit (by rewarding her for not doing it or making her aware of it when you see her doing it)
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