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A woman pulls her lip down to inspect a large mouth ulcer on her bottom lip
Mouth Ulcers

What causes mouth ulcers?

Mouth ulcers are a common condition that cause small, painful sores to appear inside the mouth. They can show up on the gums, tongue, cheeks, or soft palate. While they usually heal on their own within a week or two, they can be bothersome, especially when eating or speaking.

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