Clostridium difficile, also called C. diff, is a type of bacteria that can cause a bowel infection.
Symptoms of a Clostridium difficile infection include diarrhoea, a high temperature and feeling sick.
A Clostridium difficile infection is usually treated with antibiotics that are known to kill the bacteria.
Most people get a Clostridium difficile infection while taking antibiotics for another reason. You can catch it from other people.