Are Canker Sores Contagious? Center

Canker sores or aphthous ulcers are one of the most common causes of painful sores in the mouth. The actual cause of canker sores is unknown; however, some triggers that may precipitate outbreaks in some people include stress, anxiety, oral trauma, hormonal changes, drugs, food allergies, toothpastes, and vitamin deficiencies. Read more: Are Canker Sores Contagious? Article

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