Add Yahoo as a preferred source to see more of our stories on Google. What starts as a subtle tingle or burning in your mouth can signal something more painful on the horizon: a pesky canker sore. For ...

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 ...

Canker sores are painful ulcers that form inside your mouth. The sores can affect daily habits like eating and drinking. Experts recommend key practices like regular teeth brushing and flossing to ...

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 ...

A young nurse and mother initially thought the red spot on her tongue was the physical toll of a bad breakup, but the reality ...

A woman's overall intake of dietary antioxidants, including vitamin C, may play a role in causing recurring aphthous stomatitis (RAS), which is better known as canker sores, according to a study ...

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 ...

In 2025, Rachel Passarella, a 42-year-old nurse based in Sarasota, Florida, was misdiagnosed multiple times before a swollen ...

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 ...

Canker sores, also called aphthous ulcers, are small, shallow lesions that develop on the soft tissues in your mouth or at the base of your gums. Unlike cold sores, canker sores don't occur on the ...

A cold sore is an infection caused by the herpes simplex virus (HSV), and appear as fluid-filled blisters that develop on the lip or around the mouth, according to the American Academy of Dermatology ...

Rachel Passarella says doctors dismissed her tongue cancer symptoms for months before she was diagnosed with Stage 2 disease.