Canker sores also called aphthous ulcers or recurrent mouth ulcers, are small lesions that develop on the soft tissues in your mouth or at the base of your gums. These appear as small white swellings or sores inside the mouth with an area of redness around it.
Unlike cold sores, canker sores don't occur on the surface of your lips and aren't contagious. The painful sores can make eating and talking difficult. Most canker sores go away on their own in a week or two.
Anyone can develop canker sores. A shared factor in the environment such as certain foods or allergens put you at risk of canker sores. The factors that make you more susceptible to canker sores are being female and having a family history. These clusters of small sores are more common in women and can recur in people who have a family history of the disorder. So, one of the reasons for it to occur is genetics.
If these persist, it is advised that you check with your doctor or dentist. Also, in the case if you have unusually large or painful canker sores or canker sores that don't seem to heal.
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