The incidence of Clostridium difficile infection (CDI)
has significantly increased in the last decade in the United States
adding to the health care burden of the country. Patients with
inflammatory bowel disease (IBD) have a higher prevalence of CDI and
worse outcomes. In the past, the traditional risk factors for CDI were
exposure to antibiotics and hospitalizations in elderly people. Today,
it is not uncommon to diagnose CDI in a pregnant women or young adult
who has no risk factors. C. difficile can be detected
at the initial presentation of IBD, during a relapse or in
asymptomatic carriers. It is important to keep a high index of
suspicion for CDI in IBD patients and initiate prompt treatment to
minimize complications. We summarize here the changing epidemiology,
pathogenesis, risk factors, clinical features, and treatment of CDI in
IBD.