Abdominal Pain in Clostridioides difficile Infection

Clinical Presentation

Abdominal pain in CDI is typically accompanied by diarrhea, which is the hallmark symptom, though pain may occasionally precede the onset of diarrhea 1, 2
Pain is usually diffuse and located in the lower abdomen, corresponding to colonic inflammation 2
The severity of abdominal pain often correlates with the severity of the infection 2
In severe cases, abdominal pain may be accompanied by abdominal distension, tenderness, and decreased bowel sounds, which can signal progression to toxic megacolon or ileus 1, 2

Patients with age ≥65 years are more likely to experience severe abdominal pain with CDI 3, 4
Leukocytosis (elevated white blood cell count) is a risk factor for more severe abdominal pain 2
Hypoalbuminemia (low albumin levels) is a risk factor for more severe abdominal pain 2
Recent hospitalization or healthcare facility exposure is a risk factor for more severe abdominal pain 2
Recent antibiotic use, especially fluoroquinolones, is a risk factor for more severe abdominal pain 2
Immunocompromised status, such as transplant recipients, cancer patients, or HIV/AIDS, is a risk factor for more severe abdominal pain 5
Inflammatory bowel disease (IBD) is a risk factor for more severe abdominal pain, as patients with IBD have higher risk of severe CDI with more pronounced abdominal pain 5

Abdominal pain with elevated white blood cell count should strongly suggest CDI even in the absence of diarrhea 4
CT imaging may show colonic wall thickening, pericolonic stranding, or ascites in patients with severe CDI and significant abdominal pain 6, 2
Perirectal swabs may be an acceptable alternative for CDI testing in patients with severe abdominal pain and ileus who cannot produce stool specimens 1
Patients with severe abdominal pain should be tested for C. difficile toxins in stool specimens 1, 4

Severe abdominal pain, especially when accompanied by fever, elevated white blood cell count, and hypoalbuminemia, should prompt consideration of oral vancomycin or fidaxomicin rather than metronidazole as first-line therapy 3, 7
Patients with severe abdominal pain and signs of ileus or toxic megacolon may require additional vancomycin administered via nasogastric tube and/or rectal catheter 3, 7
Early surgical consultation should be obtained for patients with severe abdominal pain, especially those with signs of peritonitis, as they may require colectomy if medical management fails 3, 2
Antiperistaltic agents, including opiates, should be avoided in patients with CDI and abdominal pain as they may worsen the clinical course 7