What causes sores at the corners of the mouth?

Angular cheilitis, medically termed as such, is usually caused by various factors. It may be due to insufficient humidity leading to dry lips, especially during winter or in low-humidity environments. Malnutrition, particularly deficiencies in vitamin B2 and iron, can also trigger angular cheilitis. Poor oral hygiene, bacterial or candida infection, and reduced saliva production, such as in salivary gland dysfunction, are also common causes.

In terms of daily care, maintaining oral cleanliness and avoiding food debris accumulation at the corners of the mouth are essential. Regarding diet, it is important to ensure adequate intake of foods rich in vitamin B2, such as lean meats, eggs, dairy products, and leafy green vegetables, as well as iron-rich foods like red meat, legumes, and whole grains. If symptoms persist or are accompanied by pain or bleeding, prompt medical attention should be sought.