Mouth ulcers, also known as canker sores, are small, painful lesions that develop in the soft tissues of the mouth, including the inner cheeks, lips, tongue, or gums. They are not contagious and ...
If you have an ulcer, you need to be very careful with over-the-counter pain medicines. Remember: No drug is risk-free. It is very important to discuss the use of over-the-counter drugs with your ...