What causes cracking at the corners of the mouth and how to treat it?

Symptom Database

Cracking at the corners of the mouth, also known as angular cheilitis, can be a painful and frustrating condition. It is characterized by redness, dryness, and cracking of the skin at the corners of the mouth. This condition can make simple tasks like eating and speaking uncomfortable, and it can also be embarrassing. Understanding the causes of cracked corners of the mouth and how to treat it is essential for finding relief and preventing future occurrences.

Causes of Cracked Corners of Mouth

There are several factors that can contribute to the development of cracked corners of the mouth:

  • Poor oral hygiene: Neglecting proper oral hygiene can lead to the accumulation of bacteria and fungi in the corners of the mouth, causing irritation and cracking.
  • Nutritional deficiencies: A lack of essential vitamins and minerals, such as iron, zinc, and B vitamins, can weaken the immune system and make the skin more susceptible to cracking.
  • Excessive saliva: Excessive drooling or saliva pooling at the corners of the mouth can create a moist environment that promotes the growth of bacteria and fungi.
  • Ill-fitting dentures: Dentures that do not fit properly can cause irritation and rubbing against the corners of the mouth, leading to cracking.
  • Yeast or fungal infection: Candida albicans, a type of yeast, is often responsible for angular cheilitis. This infection can thrive in the warm, moist environment of the corners of the mouth.
  • Excessive licking of lips: Constantly licking the lips can strip away the natural oils and moisture, leaving the skin vulnerable to cracking.

Treatment for Cracked Corners of Mouth

Fortunately, there are several remedies and treatments available to alleviate the symptoms of cracked corners of the mouth:

1. Topical creams and ointments

Applying over-the-counter antifungal or antibacterial creams to the affected area can help eliminate any underlying infections and promote healing.

2. Lip balms and moisturizers

Using lip balms or moisturizers that contain ingredients like beeswax, shea butter, or petroleum jelly can help hydrate and protect the skin, preventing further cracking.

3. Nutritional supplements

If nutritional deficiencies are contributing to the condition, taking supplements or adjusting your diet to include foods rich in iron, zinc, and B vitamins can help strengthen the immune system and improve skin health.

4. Proper oral hygiene

Maintaining good oral hygiene practices, such as brushing and flossing regularly, can help prevent the buildup of bacteria and fungi in the corners of the mouth.

5. Avoiding irritants

Avoiding irritants like spicy foods, citrus fruits, and alcohol can help reduce inflammation and irritation in the corners of the mouth.

Preventing Cracked Corners of Mouth

Prevention is key when it comes to avoiding the discomfort of cracked corners of the mouth. Here are some tips to help prevent this condition:

1. Stay hydrated

Drinking plenty of water throughout the day can help keep the skin hydrated and prevent dryness and cracking.

2. Use a humidifier

Using a humidifier in your home can add moisture to the air, preventing dryness and irritation of the skin.

3. Avoid excessive licking of lips

Resist the urge to constantly lick your lips, as this can strip away the natural oils and moisture, making the skin more prone to cracking.

4. Practice good denture hygiene

If you wear dentures, make sure to clean them regularly and ensure they fit properly to avoid irritation and rubbing against the corners of the mouth.

5. Eat a balanced diet

Consuming a diet rich in fruits, vegetables, whole grains, and lean proteins can provide the necessary nutrients to support healthy skin and a strong immune system.

In conclusion, cracking at the corners of the mouth, or angular cheilitis, can be caused by various factors such as poor oral hygiene, nutritional deficiencies, excessive saliva, ill-fitting dentures, yeast or fungal infections, and excessive licking of lips. Fortunately, there are several treatment options available, including topical creams, lip balms, nutritional supplements, and practicing proper oral hygiene. Additionally, taking preventive measures like staying hydrated, using a humidifier, avoiding excessive lip licking, practicing good denture hygiene, and maintaining a balanced diet can help prevent the occurrence of cracked corners of the mouth. By understanding the causes and implementing appropriate treatments and preventive measures, individuals can find relief from this uncomfortable condition and maintain healthy, crack-free corners of the mouth.

Haroon Rashid, MD
Rate author
Urgent Care Center of Arlington, VA
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