Apr 3, 2018 · Canker sore — Learn about the causes, treatment and prevention of this painful mouth sore.

Canker Sores Canker sores are a type of mouth sore. They’re not contagious, but they can be painful. Doctors don’t know what causes them. But stress and minor injuries to the inside of …

May 23, 2024 · Canker sores are small, shallow wounds in your mouth that can make eating & talking uncomfortable. Learn more about causes, symptoms, diagnosis, treatment, remedies, …

One of the most obvious signs of a canker sore is a small, painful yellow or white ulcer inside of your lip or cheek. For some, the sore appears on the gums. These sometimes get confused …

Nov 17, 2025 · Canker sores are small sores that form in the mouth. They're usually white or yellow with a red border and can appear inside the cheeks and lips or on the gums or tongue. …

Apr 22, 2025 · Canker sores can be a real pain in the mouth, but you can relieve discomfort and speed up healing. Learn what canker sores look like and how to get rid of them.

Jun 16, 2025 · Also known as aphthous ulcers, canker sores look like small, white-reddish blisters inside the mouth. They can appear on the gums, tongue, roof of the mouth or soft tissue on …

Although the exact cause of this type of mouth ulcer is unknown, hereditary factors, stress or tissue injury are the likely causes of canker sores on the gum, tongue or soft palate. Acidic or …

What causes a canker sore? The exact cause of canker sores isn't known. But they are linked to different conditions. These include: An injury or irritation in the mouth, such as biting the inside …

Mar 13, 2025 · Learn key ways to heal canker sores quickly, ease discomfort and prevent future outbreaks with simple treatments. If you've ever experienced a canker sore, there's likely one …