Aphthous stomatitis is a focal inflammation of the oral mucosa, in which round ulcers (aphthae or erosion) form. Aphthae affect the inner surface of the cheeks, palate, tongue, become covered with a gray or yellowish coating, cause pain and discomfort. Usually the disease proceeds chronically, from time to time exacerbates, after 7-10 days it goes into remission.
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