What is it?

Canker sores, also known as aphthous ulcers, are small, shallow lesions that develop on the soft tissues in your mouth or at the base of your gums.

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Signs & symptoms

Symptoms of canker sores vary depending on the canker sore type:
- Minor canker sores usually don't cause pain
- Major canker sores are less common and can be extremely painful


Your doctor or dentist can identify Canker sores with a visual exam and without referring you to further diagnostic tests.


Treatment usually isn't necessary for minor canker sores. In other cases, treatment may include:
- Mouth rinses - used to reduce pain and inflammation
- Topical products - pastes, creams, gels or liquids to reduce pain. These products usually don't require prescription (over-the-counter drugs). These products may be Anbesol, Lidex, and Peroxyl
- Oral medications - may be used when canker sores are severe and don't relieved with topical products, such as sucralfate or steroids.

☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

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Frequently asked questions
Can certain foods trigger canker sores?
Is stress associated with canker sores?
Can canker sores be a sign of an underlying health condition?
Are canker sores and cold sores the same?

☝ The content of this answer is based solely on historical posts and comments generated by users on Alike. This tool is not a substitute for professional medical advice, and you should always consult with your physicians before making any changes to your medical care or treatment plan.

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