Canker sores often seem to pop up out of nowhere and, once you have them, they’re often painfully hard to ignore — especially when you try to eat or even talk. So what, exactly, are canker sores? They ...

A canker sore—a painful white ulcer inside the mouth—might be brought on by stress. Or the wrong toothpaste. Or certain foods: tomatoes, peanuts, cinnamon. Or an iron deficiency. Or an allergy. Or a ...

You can reduce canker sores by eating foods rich in vitamins like B12, zinc, and iron. Using a soft-bristle toothbrush and avoiding foods that irritate your mouth can prevent canker sores. Canker ...

That painful sore that appeared inside your cheek makes eating spicy foods pure torture and talking uncomfortable. While you might dismiss it as just another annoying canker sore that will heal on its ...

DEAR MAYO CLINIC: My husband suffers from canker sores. He seems to get a new one almost every week, and at different places in his mouth. These sores are very painful. We’ve tried everything to get ...

Hand, foot, and mouth disease is a common viral illness that causes, symptoms like fever, rash, and mouth sores. Though HFMD occurs most often in children, adults can get it, too, and may have ...

DEAR MAYO CLINIC: My husband suffers from canker sores. He seems to get a new one almost every week, and at different places in his mouth. These sores are very painful. We’ve tried everything to get ...