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Overview
What Is Clostridioides difficile Infection?
Clostridioides difficile infection is a bacterial infection of the colon that can cause diarrhea and inflammation. The bacteria may overgrow when antibiotics disrupt the normal balance of protective gut bacteria. Recent antibiotic use and exposure to healthcare settings are common contexts, although anyone can become infected. This condition is also commonly called a Clostridium difficile or C. diff infection.
Symptoms
Symptoms
- Frequent watery diarrhea
- Diarrhea lasting several days
- Abdominal cramping or tenderness
- Fever
- Nausea
- Loss of appetite
- Dehydration
- Marked tiredness or weakness
How It Spreads
How C. difficile Spreads
C. difficile forms hardy spores that can persist on hands, surfaces, medical equipment, and shared bathroom areas. The infection can spread when contaminated material reaches the mouth, often through unwashed hands. However, exposure alone does not always cause symptoms; illness often develops when antibiotics disrupt the protective bacteria normally found in the gut.
- Contact with a person who has the infection or with a contaminated environment can transfer C. difficile spores.
- Healthcare facilities can increase exposure because many people may carry the bacteria or use shared equipment and bathrooms.
- Inadequate hand hygiene can allow spores to move from contaminated surfaces to food or the mouth.
- Shared bathrooms and equipment can become contaminated if they are not cleaned appropriately.
Risk Factors
Risk Factors
- Recent or prolonged use of antibiotics, especially when antibiotics are unnecessary or used for a long time.
- Recent hospitalization or residence in a long-term care facility.
- Older age, which can increase the risk of infection and severe illness.
- A previous C. difficile infection.
- Weakened immune defenses from illness, treatment, or another medical condition.
- Gastrointestinal surgery or other gastrointestinal procedures.
- Inflammatory bowel disease, such as Crohn’s disease or ulcerative colitis.
- A serious underlying illness or multiple medical conditions.
Complications
Complications
- Dehydration from ongoing diarrhea and fluid loss.
- Electrolyte abnormalities caused by loss of fluids and salts.
- Recurrent infection after an initial episode improves.
- Severe colitis with substantial inflammation of the colon.
- Toxic megacolon, a dangerous widening of the colon.
- Bowel perforation, or a hole developing in the bowel wall.
- Sepsis, a life-threatening response to infection.
- Death in rare cases of severe infection.
SEEK URGENT HELP
Know the signs of severe illness
Worsening abdominal swelling or pain, inability to keep fluids down, faintness, confusion, or markedly reduced urination can signal severe illness. Seek urgent medical assessment if any of these symptoms occur.
Diagnosis
Diagnosis
Clinicians consider watery diarrhea, recent antibiotic use or healthcare exposure, and examination findings before ordering tests. Stool testing generally looks for C. difficile toxins or genes that allow the bacteria to produce toxins, and results must be interpreted alongside symptoms because some people may carry the bacteria without active illness.
- A medical and medication history helps identify symptoms, recent antibiotics, healthcare exposure, and other risk factors.
- An abdominal examination checks for tenderness, swelling, and signs that illness may be severe.
- Stool testing can look for C. difficile toxins or toxin-producing genes.
- Blood tests may help assess dehydration, inflammation, and the severity of illness.
- Imaging or specialist evaluation may be needed when complications are suspected.
Treatment & Management
Treatment and Management
Treatment is clinician-directed and may include stopping or changing the triggering antibiotic when appropriate. A clinician commonly prescribes an antibiotic that specifically targets C. difficile, while fluids and electrolyte replacement may be needed for dehydration. Do not stop a prescribed medicine or begin treatment without medical advice.
Treatment for recurrent or severe infection
- Initial infection is treated with a clinician-prescribed medication directed against C. difficile, along with fluids and other supportive care when needed.
- A recurrence may require another targeted treatment plan and closer follow-up with a healthcare professional.
- Severe or fulminant disease may require hospital care, intravenous fluids, specialist input, and close monitoring.
- Microbiota-based therapy may be considered by specialists for selected people with recurrent infection.
- Avoid self-treating with antidiarrheal medicines unless a clinician specifically advises it.
Prevention
Prevention
- Take antibiotics only as prescribed and use them for the duration your clinician recommends.
- Do not share antibiotics with anyone or save leftover medicine for later.
- Tell clinicians about any previous C. difficile infection before starting new treatment.
- Wash your hands with soap and water after using the toilet and before eating or preparing food.
- Clean contaminated bathroom surfaces as directed, using an appropriate disinfecting method.
IMPORTANT PREVENTION DETAIL
Soap and water matter
Alcohol-based hand sanitizer may not reliably remove C. difficile spores. Prevention steps reduce risk but cannot eliminate it completely, especially after healthcare exposure or antibiotic use.
Outlook and Prognosis
Outlook and Prognosis
Many people recover from C. difficile infection with appropriate treatment, but recurrence can occur, often within weeks after treatment. Age, immune status, underlying illness, severe initial disease, and repeated antibiotic exposure can affect the outlook. Prompt follow-up is important because recurrent infection may need a different treatment approach.
When Should You See a Doctor
When Should You See a Doctor?
CONTACT A CLINICIAN PROMPTLY
Get evaluated for concerning diarrhea
Contact a clinician promptly if you have three or more watery stools in 24 hours, persistent diarrhea, diarrhea after recent antibiotics or healthcare exposure, fever, or significant abdominal cramping.
- Severe or worsening abdominal pain requires urgent medical attention.
- A swollen or visibly distended abdomen can be a warning sign of serious illness.
- Blood in the stool should be assessed urgently.
- Fainting or feeling as though you may pass out can indicate dehydration or severe illness.
- Confusion or unusual difficulty staying alert requires emergency assessment.
- Inability to keep fluids down increases the risk of dangerous dehydration.
- Very little urination can indicate significant fluid loss.
- Signs of sepsis, such as rapidly worsening illness, severe weakness, or trouble breathing, require emergency care.
Branches
1 topic
Clostridioides Difficile Infection
Infectious Diseases
Viruses
1 topic
Clostridioides Difficile Infection
Adenovirus Enteritis
Symptoms
1 topic
Clostridioides Difficile Infection
Fever
