18/11/2025
Mouth ulcers are painful sores that can appear anywhere inside of your mouth, including the gums, tongue, roof of mouth, inner cheeks, or lips. Most mouth ulcers are common, harmless, and heal on their own within a few weeks.
This JAMA Otolaryngology–Head & Neck Surgery Patient Page describes the causes, types, and treatment for mouth ulcers. https://ja.ma/3LI0Kug