GI diseases most commonly associated with pyoderma gangrenosum
- Like erythema nodosum, PG is associated with ulcerative colitis (most common), Crohn’s disease, and chronic infectious hepatitis.
- One study reported that 50% all cases of PG are associated with ulcerative colitis but less than 10% of all patients with ulcerative colitis will develop PG.
- A separate study reported that one third of patients with PG had inflammatory bowel disease; ulcerative colitis and Crohn’s disease were equally represented.
