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 ...

Mouth ulcers, or canker sores, are common but painful. Triggers include minor injuries, food sensitivities, nutrient deficiencies, hormonal shifts, an ...

Roll your tongue around your mouth, and you might feel a sting from a new tender spot. A tiny, unwelcome crater of pain, a red circle of fire tucked against your cheek. It feels worse with every ...

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 ...

Those tiny white spots inside your mouth might be small in size, but they deliver pain far beyond their dimensions. Canker sores affect nearly everyone at some point, making simple pleasures like ...

Canker sores, or aphthous ulcers, can affect the tongue and other parts of the mouth. A canker sore on the tongue can be painful and make eating difficult. Topical treatments and mouthwashes can help ...

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 ...

Mouth ulcers are painful sores that appear in the mouth. They typically appear on the inner lips, gums, tongue, roof of the mouth, or throat and may make it difficult to eat. Eating a lot of very ...

Anyone who has ever had a canker sore knows just how uncomfortable an ulcer can be. These painful, slow-healing sores can appear anywhere on your body, from your mouth to your skin to the lining of ...

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, ...