Mouth ulcers, also known as canker sores or aphthous ulcers are common and painful lesions found in the oral cavity. A lesion is an abnormal area of tissue inside or outside your body that may get bigger or change it’s appearance gradually. It may or may not be cancerous.

Mouth ulcers generally develop inside or at the base of your mouth and are painful. They are mostly seen in women and adolescents (individuals between ages 10 and 24 years). Mouth ulcers usually go away within one to two weeks.