December 31st 2006
For the past month, a 19-year-old woman has had abdominalpain, diarrhea, intermittent fever, and occasionalvomiting. She now seeks medical attention because earlierin the day she noticed a large amount of blood in herstool. She denies trauma, travel to a foreign country, andillicit drug use. She drinks alcohol occasionally but hasnot done so for the past 3 months.