An Unusual Presentation of Severe Sepsis Due to Clostridium difficile Enteritis.

We report an atypical case of Clostridium difficile (C.difficile) infection in a 35-year male who presented to the hospital because of diffuse abdominal pain associated with nausea and vomiting. Patient denied diarrhea or hematochezia. On physical examination, he was afebrile, but tachycardic and hypotensive. Abdominal examination revealed mild diffuse tenderness without signs of peritonitis. Lab work up was significant for leucocytosis and elevated serum lactate. Computed tomography (CT) of the abdomen and pelvis with intravenous (IV) contrast was done with findings suggestive of enteritis. Initial work up did not reveal any source of infection, so he was treated with broad-spectrum antibiotics for severe sepsis of unknown origin. Broad-spectrum antibiotics were continued for two days without significant improvement in signs and symptoms; stool studies were obtained which showed positive C.difficile on polymerase chain reaction (PCR) after which oral vancomycin was started and IV antibiotics were stopped. The patient's signs and symptoms improved after a couple of days of oral vancomycin and he was discharged home to complete a 14-day course of oral vancomycin.