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
Infection. Fungal infections are the most
common, but viral or bacterial infections can also
Nutritional deficiency of vitamin
Over-closure of the mouth in someone who has been without teeth
or dentures for some time.
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
William H. Blahd, Jr., MD, FACEP - Emergency Medicine & David Messenger, MD
How this information was developed to help you make better health decisions.