Clostridium difficile, or C. diff, infections can become life threatening, according to WebMD. The disease can cause holes in the intestines, which can prove fatal if not treated immediately. This is especially true in people who are receiving long-term care that includes regular antibiotics.
An overgrowth of bacteria that produce toxins that compromise the lining of the intestines causes C. diff. Symptoms include three to four bouts of watery diarrhea a day for several days and persistent abdominal pain, as stated by WebMD. In severe cases, frequent, watery diarrhea occurs up to 15 times a day. Weight loss, blood or pus in the stool, severe abdominal pain, fever, and loss of appetite are additional symptoms.