D2I2.
autoimmune

Inflammatory bowel disease

bowel disease (IBD) is a group of inflammatory conditions of the colon and small , with Crohn's disease and ulcerative (UC) being the principal types. Crohn's disease affects the small intestine and large intestine, as well as the mouth, , stomach and the anus, whereas UC primarily affects the colon and the rectum.

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Plain-language summary adapted from Wikipedia. Not medical advice.