Canker sores, also called aphthous ulcers, are small, shallow lesions that develop on the smooth tissues to your mouth or at the bottom of your gums. Not like cold sores, canker sores don't arise at the surface of your lips and they aren't contagious. They may be painful, but, and can make consuming and speakme difficult. Most canker sores depart on their own in every week or . Take a look at with your physician or dentist when you have unusually large or painful canker sores or canker sores that do not appear to heal. Symptoms Most canker sores are round or oval with a white or yellow middle and a pink border. They form interior your mouth on or below your tongue, inner your cheeks or lips, at the bottom of your gums, or on your tender palate. You may word a tingling or burning sensation a day or before the sores clearly appear. There are several varieties of canker sores, together with minor, important and herpetiform sores. Minor canker sores Minor canker sores are the maximum common and: Are commonly small Are oval shaped with a purple side Heal with out scarring in one to 2 weeks Most important canker sore
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