What causes oral ulcers in a one-year-old child?

The possible causes of oral ulcers in a one-year-old baby may include the following: 1. Poor habits: The baby may have habits such as lip biting or tongue biting, which can easily damage the oral mucosa and lead to ulcers. 2. Genetic factors: If there is a family history of recurrent oral ulcers, the baby's risk of developing the condition may increase. 3. Vitamin deficiency: The baby's diet may be unbalanced, leading to deficiencies in vitamins such as B vitamins and vitamin C, which can contribute to the development of oral ulcers. 4. Infection: As the baby's immune system is not yet fully developed, they are more susceptible to infections by pathogens such as the herpes simplex virus. These infections can cause blisters on the oral mucosa, which may progress to ulcers. In response to these causes, parents should pay attention to the baby's oral hygiene, discourage bad habits, ensure a balanced diet, and seek timely medical evaluation and treatment for the baby.