What Causes Mouth Ulcers in Children?

By Shubhi Kumar
26 May 2025, 19:00 IST

Mouth ulcers are small and painful sores inside the mouth. They are common in children and can result from several underlying causes. While usually harmless, they can cause discomfort while eating or speaking. Understanding the possible triggers can help with prevention and faster healing. Tap to read!

Mouth Wounds

Causes would range from an accidental bite, sharp food substances, or aggressive brushing to trauma of the delicate lining inside the child's mouth, culminating in ulcers.

Infections

Herpes simplex, or hand, foot, and mouth disease, can cause painful sores in the mouth and throat due to viral infections.

Nutritional Deficiencies

Children may get mouth ulcers if they lack certain essential nutrients, such as vitamin B12, iron, or folic acid.

Stress and Hormonal Changes

Emotional stress or changing hormones can cause ulcers, especially during growth spurts or anxiety phases.

Oral Hygiene

Poor oral hygiene or harsh toothpaste irritates the mouth lining, thus increasing the risk of ulcers.

Information credits

This information is sourced from Healthline. Always consult a paediatrician or healthcare provider for proper diagnosis and treatment.