Many people develop mild or moderate watery diarrhoea. They may also have some crampy abdominal pains, nausea (feeling sick) and fever. This is similar to the symptoms that occur with many other mild or moderate bouts of gastroenteritis (gut infection). Symptoms may last from a few days to several weeks. In mild cases, symptoms often clear away without any specific treatment. The decision to treat C. difficile infection, and the type of treatment, depends on the severity of the illness. No treatment is needed if you have no symptoms but are known to carry the bacteria in your gut. However, if symptoms develop, some of the treatments below may be needed. If the patient is not already in hospital, people who have mild infection can often be treated at home. However, if the infection is more severe, you will usually be admitted to hospital so that the patient can be treated and closely monitored.