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Angular cheilitis

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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:

  • Infection. Fungal infections are the most common, but viral or bacterial infections can also occur.
  • Nutritional deficiency of vitamin B.
  • 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 without teeth.

Current as of: July 31, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

Current as of: July 31, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

The Health Encyclopedia contains general health information. Not all treatments or services described are covered benefits for Kaiser Permanente members or offered as services by Kaiser Permanente. For a list of covered benefits, please refer to your Evidence of Coverage or Summary Plan Description. For recommended treatments, please consult with your health care provider.