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Ulcerative colitis (UC) is a clinical form of inflammatory bowel disease. The association of pyoderma gangrenosum or erythema nodosum with UC is well known. In addition, pustular eruption has been reported in UC. We describe a patient with UC who exhibited subcutaneous abscesses, as well as pustular eruption with a clinical course paralleling that of UC exacerbation. (J Am Acad Dermatol 2000;42:363-5...