Canker sore (aphthous ulcer)

Canker sores (aphthous ulcers) are very common. Typically, they are shallow ulcers on the inside of the mouth or gums, with a white or whitish-yellow base surrounded by a reddish border.

Review Date: 07/03/2011
Reviewed By: Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine, Harvard Medical School; Physician, Massachusetts General Hospital.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

This helped!

Related Genital Herpes Topics

Note: All clinical content on this site is physician-reviewed, except material generated by our community members.

Featuring Content From:

We comply with the HONcode standard for
trustworthy health information: verify here.

By using this service, you accept our Terms of Use. Please read them. The consumer health information on is for informational purposes only and is not a substitute for medical advice or treatment for any medical conditions. You should promptly seek professional medical care if you have any concern about your health, and you should always consult your physician before starting a fitness regimen. Copyright © 2012 Remedy Health Media, LLC. All Rights Reserved.

Healthcentral.com is part of Remedy Health Media

Canker sore (aphthous ulcer)

People who read this also read...

What the community is saying...

Guide to Herpes - extract published online

Jeannie May

Ask a Question