Canker Sores

Skin Conditions
Canker sores, also called aphthous ulcers, are shallow, painful sores that form on the inside of the mouth. Though physicians don’t fully understand what causes them, injuries to the inside of the mouth, infection and stress are a few possible contributing factors. Usually canker sores heal in 10 to 14 days. Although painful, canker sores are harmless.


Although nothing can entirely prevent canker sores, the following measures may help:

  • Avoid injury to the inside of your mouth by chewing food slowly and using a soft-bristled toothbrush
  • Avoid tobacco products
  • Reduce stress, eat healthy foods, and exercise to strengthen your immune system


Home care  Home Care

­Canker sores usually represent more of a nuisance than serious problem. Treatment is focused on relieving discomfort.

  • Take Advil® or Tylenol®
  • Avoid foods known to increase pain such as salty foods, citrus fruits, hard0edged foods (such as potato chips), and caffeinated beverages.

Professional care   Professional Care

Seek medical attention if:

  • You are unable to eat or drink because of the pain
  • The store does not heal in 14 days