Types of mouth ulcers include canker sores and the sores caused by hand, foot, and mouth disease. Mouth ulcers are rarely contagious and usually go away after 1 to 2 weeks, even without treatment.

For decades, oral health care has mainly focused on preventing cavities and gum disease. However, scientific research has ...

Aphthous stomatitis: This skin condition causes small mouth ulcers, also called canker sores. They commonly occur in people with Crohn’s when intestinal symptoms flare up and then go away when ...

Cystic acne typically develops due to oil, bacteria, and dead skin cells getting trapped in a hair follicle or pore. The cysts usually appear on the face, neck, back, shoulders, and arms.