Angular cheilitis (also called perlèche, cheilosis, or stomatitis) is a condition with deep cracks and splits at the corners of the mouth. If severe, the splits or cracks may bleed when the mouth is opened and a shallow ulcer or a crust may form.
Possible causes of angular cheilitis include:
In young children, the cracks and splits often begin with lip-licking, biting the corners of the mouth, or thumb-sucking.
Treatment depends on the cause and can include lip lubrication, antifungal and antibiotic medicine, vitamins, and dentures for a person without teeth.
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