C. diff Infections

Source: MedlinePlus Health Topics, U.S. National Library of Medicine

Last synced 8/9/2026Status: primary verified

What is C. diff ? C. diff is a bacterium that can cause diarrhea and more serious intestinal conditions such as colitis. You may see it called other names, such as Clostridioides difficile (the new name), Clostridium difficile (an older name), and C. diff icile. It causes close to half a million illnesses each year. What causes C. diff infections? C. diff bacteria are commonly found in the environment, but people usually only get C. diff infections when they are taking antibiotics . That's because antibiotics not only wipe out bad germs, but they also kill the good germs that protect your body against infections. The effect of antibiotics can last as long as several months. If you come in contact with C. diff germs during this time, you can get sick. You are more likely to get a C. diff infection if you take antibiotics for more than a week. C. diff spreads when people touch food, surfaces, or objects that are contaminated with feces (poop) from a person who has C. diff . Who is more likely to get a C. diff infection? You are at more likely to get a C. diff infection if you: Are taking antibiotics Are 65 or older Recently stayed in a hospital or nursing home Have a weakened immune system Have had a previous infection with C. diff or were exposed to it What are the symptoms of C. diff infections? The symptoms of C. diff infections include: Diarrhea (loose, watery stools) or frequent bowel movements for several days Fever Stomach tenderness or pain Loss of appetite Nausea Severe diarrhea causes you to lose a lot of fluids. This can put you at risk for dehydration . How are C. diff infections diagnosed? If you have been taking antibiotics recently and have symptoms of a C. diff infection, you should see your health care provider. Your provider will ask about your symptoms and do a lab test of your stool . In some cases, you might also need an imaging test such as an x-ray or CT scan to check for complications. What are the treatments for C. diff infections? Certain ant

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This information is for general education and is not medical advice. Always talk to a licensed U.S. clinician about your situation, medications, or treatment decisions.