What vitamin deficiency causes mouth ulcers?

Generally, the occurrence of oral ulcers is associated with deficiencies in various vitamins such as vitamin B2, vitamin B6, vitamin B12, vitamin C, and vitamin E. If abnormalities occur, it is recommended to seek medical attention promptly. Detailed analysis is as follows:

1. Vitamin B2: Vitamin B2 helps maintain the normal function of oral mucosa and contributes to keeping the mouth moist. A deficiency in vitamin B2 may lead to dry mouth, which can trigger oral ulcers.

2. Vitamin B6: Vitamin B6 aids in the repair of oral mucosa. When the body lacks vitamin B6, the mucosal repair process may be affected, increasing the risk of oral ulcers.

3. Vitamin B12: Vitamin B12 promotes the growth and repair of oral mucosa and plays a role in preventing oral inflammation and ulcers. A deficiency in vitamin B12 may cause abnormal metabolism of the oral mucosa, leading to ulcers.

4. Vitamin C: Vitamin C has antioxidant properties and helps maintain the elasticity and resilience of oral mucosa. A deficiency in vitamin C may cause thinning of the oral mucosa, making it more susceptible to damage and triggering oral ulcers.

5. Vitamin E: Vitamin E protects oral mucosa from damage caused by free radicals. If the body lacks vitamin E, the mucosa's defense mechanisms may weaken, making it more vulnerable to external factors and resulting in oral ulcers.

Patients with oral ulcers are advised to use medications such as compound chlorhexidine mouthwash, topical solution for mucosal repair, and oral ulcer powder under a doctor's guidance.