Read on for specific causes. Canker sores can develop anywhere on the tongue or mouth. They are open white or yellow areas ...

Canker sores and oral cancer lesions may seem similar but there are ways to tell the difference. A lesion that's red, typically flat, and painful early on is usually a canker sore (aphthous ulcer).

Bumps on your tongue may be lie bumps, canker sores, cold sores, or in rare cases, oral cancer. Lie bumps are common and happen when the small bumps on your tongue become inflamed. Oral cancer is ...