What should I do if I develop an ulcer inside my mouth?

Mar 26, 2025 Source: Cainiu Health
Disease description:

I've had several ulcers in my mouth for several days, and it hurts when I eat or drink. Can you help me check what's causing these ulcers and tell me what I should do?

Doctor's answer (1)
Dr. Liu Chao

Ulcers developing in the mouth, also known as oral ulcers, can be improved through dietary adjustments, appropriate mouth rinsing, nutritional supplementation, and medication.

Oral ulcers mainly manifest as one or more round or oval shallow ulcers on the oral mucosa, with red and swollen edges and often covered with yellowish or whitish coating in the center, accompanied by significant pain. A bland diet rich in vegetables and fruits containing ample vitamins, such as apples, pears, and bananas, is recommended to supplement vitamins and promote ulcer healing. Spicy and irritating foods should be avoided to prevent irritation to the ulcerated area.

Rinsing the mouth with mouthwash after meals helps reduce bacterial growth in the oral cavity, alleviate irritation to the ulcerated area, and promote healing. It is also important to obtain sufficient vitamins and trace elements, maintain good oral hygiene, and minimize mental stress. For local treatment, medications that promote ulcer healing, such as mouth rinses, patches, or gels, can be used to relieve pain and accelerate healing.

Oral ulcers can be caused by various factors, including oral trauma, immune system disorders, and malnutrition. If discomfort persists, prompt medical consultation is recommended.