What are the causes of mouth ulcers?

Oral ulcer is a common oral mucosal disease, and its causes are complex and diverse. The following are the main causes of oral ulcers: 1. Immune factors: Declining immunity or immune dysfunction are important triggers for oral ulcers. Prolonged late-night work, excessive fatigue, and other factors may reduce immune function, making the oral mucosa fragile and susceptible to damage. 2. Genetic factors: Oral ulcers are closely related to genetics. Studies have shown that about 40% of patients have a family history of oral ulcers, indicating that genetic factors play a certain role in the development of oral ulcers. 3. Nutritional deficiencies: Deficiencies of nutrients such as iron and B vitamins in the body, as well as nutritional imbalances caused by picky eating, may induce oral ulcers. 4. Psychological factors: Factors such as high mental stress, emotional tension, and large mood swings may also lead to the occurrence of oral ulcers. Therefore, the prevention and treatment of oral ulcers require comprehensive consideration of multiple factors and the adoption of comprehensive measures.