Pimples and other lesions can form when hair follicles become clogged with oil or dead skin cells. Some people with ulcerative colitis struggle with acne due to inflammation, or as a side effect ...

Quit or avoid smoking. Smoking damages teeth and gums. Plus it can trigger Crohn’s flares and contribute to mouth cancer lesions, which might be mistaken for Crohn’s disease mouth ulcers. [9] ...