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Cracked corners of the mouth

Cracked corners of the mouth often result from a combination of moisture, irritation and infection. Saliva that repeatedly collects in the corners softens the skin, allowing fungi or bacteria to grow more easily. Poorly fitting dentures, lip licking, nutritional deficiencies or diabetes sometimes contribute.

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  • Cracked corners of the mouth are often called angular cheilitis.
  • The condition usually develops because the skin at the mouth corner stays damp for too long and becomes irritated.
  • Once the skin is damaged, fungi and bacteria can contribute more easily.
  • Poorly fitting dentures, frequent lip licking, drooling during sleep, dry mouth, nutritional deficiencies and diabetes can increase the risk.
  • Recurring or persistent symptoms need assessment for underlying causes, as well as an ointment.

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