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Canker Sore
A canker sore is a mouth ulcer or sore that is open and painful. The most common sign is a burning or tingling in an area of your mouth that the red sore appears. More »
Source: healthline.com

en.wikipedia.org/wiki/Aphthous_stomatitis

Aphthous stomatitis is a common condition characterized by the repeated formation of benign and non-contagious mouth ulcers (aphthae) in otherwise healthy individuals. The informal term canker sores is also used, mainly in North America, ...

www.webmd.com/oral-health/guide/canker-sores

Jun 10, 2016 ... Canker sores appear in the mouth and can be painful. Learn from the experts at WebMD about causes, symptoms, and treatment.

www.webmd.com/oral-health/tc/canker-sores-topic-overview

What is a canker sore? A canker sore is a shallow sore shaped like a crater (ulcer ) on your tongue or on the inside of your lip or cheek. Canker sores have a red ...

www.medicinenet.com/canker_sores/article.htm

Canker sores are small painful sores on the inside of the mouth. Causes like spicy foods, vitamin deficiencies, stress, autoimmune disorders, and hormone ...

www.colgate.com/en/us/oc/oral-health/conditions/mouth-sores-and-infections/article/canker-sores-cold-sores-and-more

What Is It? Canker sores are painful, round mouth sores. They show up in several places: On the inside of the lips; Inside the cheeks; On the tongue; At the base ...

www.mayoclinic.org/diseases-conditions/canker-sore/basics/causes/con-20021262

The precise cause of canker sores remains unclear, though researchers suspect that a combination of factors contributes to outbreaks, even in the same person.

www.healthline.com/health/canker-sores

Oct 10, 2016 ... A canker sore, or aphthous ulcer, is a mouth ulcer or sore that's open and painful. It's the most common type of mouth ulcer.

familydoctor.org/condition/canker-sores

Canker sores are small, thin sores in the mouth. They usually last 7 to 10 days and go away on their own, but may require a doctor visit or treatment.

www.animated-teeth.com/canker_sores/t5-canker-sores-herpes.htm

It's easy to tell canker sores and oral herpes apart. Each has its own set of identifying characteristics. | Location | Appearance | Symptoms | Pictures.