Major Chad M. Sisk, DO

For 6 weeks, a 29-year-old previously healthy man had between 10 and 15 episodes daily of small-volume bloody diarrhea with intermittent paraumbilical pain. Anorexia and the loss of 25 lb accompanied the diarrhea. The patient had no significant medical history, took no medications, had not traveled recently, and had no contact with sick persons. He denied fever, chills, nausea, vomiting, and all other symptoms.