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 ...

Q: What causes canker sores? Why would I have a sudden outbreak of them in my mouth? A: There are several theories about what leads to canker sores, those painful ulcers that form inside the mouth, on ...

Certain foods, including spicy, acidic, or abrasive foods, can trigger pain in canker sores. Also, food allergies may trigger ...

For clinicians, managing recurrent aphthous stomatitis means looking beyond the ulcer to triggers and systemic links.

Canker sores are vexing and common. The reason they occur isn’t clear, but your toothpaste could be a factor. An ingredient often used to make toothpaste foamy, sodium lauryl sulfate (SLS), has been ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Like an annoying house pest, canker sores are a minor inconvenience that can really do a damper on your ...

If you panic-googled “how to get rid of a canker sore” because you have one of these tender spots inside your mouth—or you feel one brewing—you’ve come to the right place. As tiny as they are, canker ...

Three times in the past year, I got a canker sore while traveling. The pattern makes it easy to diagnose: The cuisines of the countries I had traveled to were heavy in tomato sauce, cheese, yogurt, ...

When Mari Henderson read a story about a woman the same age as her with tongue cancer, she asked for a biopsy. It helped her receive an early diagnosis. For several weeks, Mari Henderson felt a canker ...