1. What is aphtha in babies? 2. What are the symptoms of aphtha in babies? 3. What are the treatments for aphtha in babies? 4. How to prevent aphtha in babies? 1. What is aphtha in babies? Infantile aphthous ulcers, also known as gum ulcers, are ulcerative lesions that appear on the gums and oral mucosa. This condition usually occurs within the first few months of life, but can also occur within the first year of life. While it has no long-term effects on your child\’s health, it can cause your child to feel uncomfortable and uneasy. 2. What are the symptoms of aphtha in babies? 1. Redness and swelling: Redness and swelling will appear around the gums. 2.