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What are the severity levels of canker sores?

Canker sores are typically a minor problem, and they go away on their own within a week. They can return and be just one or several.

However, if they last longer than a week, see your dentist. He or she can diagnose the problem and offer treatment. A secondary infection could occur, or they can be the sign of a greater problem such a disease or disorder. Timely diagnosis and treatment is important.

Continue Learning about Canker Sores

How do other illnesses affect aphthous stomatitis (canker sore)?
American Dental AssociationAmerican Dental Association
Other illnesses can lead to mouth sores. Sore can occurs in people with weak immune systems -- the v...
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Are any other diseases associated with canker sores?
American Dental AssociationAmerican Dental Association
There are many causes for canker sores. One can be the symptom of a disease or disorder. Your mouth ...
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Is aphthous stomatitis (canker sore) serious?
American Dental AssociationAmerican Dental Association
Canker sores usually heal on their own after a week or two and are usually not serious. Your dentist...
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As a Teen, What Can I Do About My Canker Sores?
As a Teen, What Can I Do About My Canker Sores?

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.