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Medical Definition of Apthous ulcers
1. These small sensitive painful craters in the mouth are common canker sores. There are many possible causes of apthous ulcers and frequently the cause is unknown. (12 Dec 1998)
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1. These small sensitive painful craters in the mouth are common canker sores. There are many possible causes of apthous ulcers and frequently the cause is unknown. (12 Dec 1998)