Canker sores are very painful sores found inside the mouth that often appear out of nowhere, leaving you wondering what might be causing them. Canker sores (aphthous ulcers) are not contagious and are not related to the herpes simplex virus, also known as cold sores. Show The exact cause of canker sores is still unknown. They happen when your immune system reacts to attack the lining of your mouth. This may be triggered by mechanical irritation or trauma, as an allergic reaction to something you ate, or exposure to chemicals in toothpaste or mouthwash. In some cases, certain types of bacteria or viruses are responsible for the painful mouth sores. Women statistically suffer from canker sores more often than men. Canker sores are typically seen in people between the ages of 10 and 40, although they have been known to show up at any age. CausesCanker sores are thought to be caused by or triggered by these factors: Trauma to the Mouth
Irritation From Food, Drink, Tobacco, and Chemicals
Click Play to Learn About the Potential Causes of Canker SoresAllergic and Immune Reactions
Miscellaneous Causes
TreatmentTreatment is generally not necessary for most canker sores as they tend to heal quickly on their own. If canker sores persist for longer than two weeks, see the dentist. See your dentist immediately if canker sores:
Frequently Asked Questions
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By Shawn Watson Thanks for your feedback! How many is too many canker sores?Canker sores are fairly common, but that doesn't mean they should be ignored. If you have sores that last longer than 2 weeks or you can't eat or drink because of the pain, call your doctor. Also call if you get the sores more than two or three times a year.
How do I stop recurring canker sores?Use salt water or baking soda rinse (dissolve 1 teaspoon of baking soda in 1/2 cup warm water). Dab a small amount of milk of magnesia on your canker sore a few times a day. Avoid abrasive, acidic or spicy foods that can cause further irritation and pain.
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