For Canker Sore we have terms and definitions in 3 topics. The topics are HIV and AIDs, Medical and Sexually Transmitted Diseases.

See APHTHOUS ULCER.
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Small, painful sore that usually occurs on the inside of the lip or cheek, or sometimes under the tongue; caused by bacteria, irritation of the area, stress, or allergies
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Open sores that appear around the mouth/lips, sometimes confused with herpes sores. These are also called cold sores and are not caused by herpes.
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