Mouth ulcer Definition: A mouth ulcer or canker sore is a painful open sore inside the mouth caused by a break in the mucous membrane. The condition is also called aphthous stomatitis.

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MayoClinic.com: What Are Canker Sores? - describes symptoms, possible causes, treatment, and self care.

Canker Sore: What treatment and home remedies are there for canker sores? - Home remedy treatment for canker sore that speeds heeling. The number one cause could be in your own bathroom, your toothpaste! The sores are not contagious. ... Your Information Center for Canker Sore Cause & Home Remedy Treatment for quick pain relief. ... a Home Remedy Canker Sore Medication that Speeds healing better than a prescription ...

Canker sore picture and definition - Information and picture about Canker sore ... Canker sore. A canker sore is an open sore in the mouth, which appears as a painful ... bright red area. A canker sore is not harmful but may be ...

Canker sores and aphthous ulcers: What causes these mouth ulcers? - About the causes of canker sores, aphthous ulcers, and mouth ulcers. ... Select a canker sore topic. What causes canker sores? How do you identify canker sores ... postulated as being a trigger for canker sore breakouts. Any substance that comes into contact ...