Pseudomembranous colitis. A complication of sulfasalazine therapy in a patient with Crohn's colitis.

Pseudomembranous colitis is a potentially life-threatening acute medical problem usually associated with a history of previous antibiotic exposure. Presented here is a case of sulfasalazine associated pseudomembranous colitis in a patient with known Crohn's colitis. The diagnosis was confirmed by identifying Clostridium difficile toxin in the stool. This a newly reported complication of sulfasalazine therapy.