There are a number of diseases and conditions that are linked to inflammatory bowel disease (IBD). Below is a brief summary of each of these conditions with links to additional information:

• Pyoderma gangrenosum is a skin disorder that may first appear at the spot of a minor cut and looks like blister, red bump or swells with pus. It is estimated to impact 5 percent of patients with ulcerative colitis and 2 percent of patients with Crohn’s disease. For additional information, please go to the Pyoderma Gangrenosum and IBD page.
• Erythema nodosum is a skin irritation, which is predominantly located in the front of the legs, below the knees and consists of reddish, painful lumps. Erythema nodosum is the most common skin abnormality seen in IBD patients. See our erythema nodosum and IBD page for more information.
• Primary sclerosing cholangitis (PSC) is when the bile ducts on the inside and outside of the liver become inflamed and scarred. When the ducts become scarred, they become blocked and bile can not flow through, which is essential for digestion. PSC is associated with ulcerative colitis. Please find additional information at our Primary Sclerosing Cholangitis and IBD page.
• Celiac disease is a digestive disease that damages the small intestine because of sensitivity to gluten, a protein found in wheat, rye, barley and oats. Though rare, those who have ulcerative colitis or Crohn’s may also have celiac disease at the same time. Patients with microscopic colitis are at increased risk for celiac disease. Go to our celiac disease and IBD page for more information.
• A kidney stone is a piece of material that forms from crystallization of excreted substances in the urine. Kidney stones are much more common in individuals with IBD than in the general population. See our kidney stones and IBD page for more information.
• Colon cancer is when malignant tumors are found in the colon (or large intestine). Individuals with ulcerative colitis have a higher risk of developing colon cancer due to the inflamed lining of their colon. See our Colon Cancer and IBD page for more information.

Last updated 3/2008