Skip to Content
Home > Wellness > Health Library > Canker Sores
Browse and register for related classes.
Canker sores (aphthous stomatitis) are painful white ulcers in the
mouth that appear most often on the tongue, inside the cheeks, and inside the
lips. Unlike cold sores, canker sores are not contagious.
The cause of canker sores is not well-understood but may include
injury or irritation inside the mouth, infection, and stress. Minor canker sores heal in 1 to 3 weeks.
Most people do not need to see a doctor for canker sores. The sores will get better on their own. To relieve pain, you might try over-the-counter medicine or change your diet to bland, soft foods.
Current as of:
November 14, 2014
Kathleen Romito, MD - Family Medicine & Arden Christen, DDS, MSD, MA, FACD - Dentistry
To learn more about Healthwise, visit Healthwise.org.
© 1995-2015 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.
250 Pleasant Street
Concord, NH 03301
Contact Concord Hospital
View Quality Data
© 2016 Concord Hospital