What should I do for a 2-year-old child with oral ulcers?

Aphthous ulcers (canker sores) are a very common oral condition—familiar to many adults, yet they can also occur in toddlers as young as two years old. So, what should parents do if their two-year-old develops an aphthous ulcer?

How to manage aphthous ulcers in a two-year-old

After a two-year-old develops an aphthous ulcer, dietary adjustments are essential. Prolonged ulcers often cause mucosal pain, so caregivers should prepare soft, easily digestible complementary foods—such as vegetable congee or minced meat congee—to minimize irritation to the oral mucosa while ensuring adequate nutrition. Additionally, avoid offering acidic or astringent fruits.

For a two-year-old with an aphthous ulcer, you may crush one or two vitamin C tablets into a fine powder and apply it directly to the ulcerated area. Have the child keep their mouth closed for a short while afterward. Apply twice daily. If the child resists, mothers may administer this treatment gently while the child is asleep—the efficacy remains notable. For larger ulcers causing significant discomfort, parents should select appropriate interventions based on the child’s individual condition.

Following the onset of an aphthous ulcer, it is crucial to remove food debris from the ulcer surface promptly after each meal to prevent secondary infection. With proper care, most aphthous ulcers resolve spontaneously within approximately two weeks. However, if an ulcer persists beyond this timeframe without improvement, over-the-counter mouthwashes specifically formulated for aphthous ulcers may be purchased at pharmacies. We hope this information proves helpful!