Crohn's and Colitis UK This website is for people with Ulcerative Colitis and Crohn's Disease (Inflammatory Bowel Disease or IBD), their families and friends, and health professionals working in this field. It is provided by the National Association for Colitis and Crohn's Disease (NACC), which is a UK Charity. Colitisandcrohns.org~Site InfoWhoisTrace RouteRBL Check