Mouth corner cracks may signal vitamin deficiency

Cracks at the corners of the mouth, medically known as angular cheilitis, are an inflammatory condition that affects the skin where the lips meet. It causes redness, peeling, and painful cracking that may hinder eating and talking. Usually, it results from saliva buildup leading to skin irritation, especially in people who lick their lips or breathe through their mouth. The condition can sometimes develop into a fungal or bacterial infection due to the cracks. Symptoms typically include redness, burning, and pain, which can worsen with poor nutrition, stress, or continuous skin irritation. Deficiencies in iron and certain B vitamins, particularly B12 and folic acid, are major underlying causes associated with recurrent or prolonged cases, especially in cases of malnutrition or gastrointestinal diseases. However, infection and localized irritation remain the most common causes. To treat the condition, it is advised to maintain good hygiene of the area, address the underlying cause, and correct vitamin deficiencies if they are contributing factors. Consulting a doctor is recommended to determine the appropriate treatment, especially if the condition persists or recurs.

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