Differential Diagnosis
- Inflammatory bowel disease
- Infection
- Bacteria: Campylobacter jejuni, Escherichia coli, Salmonella, Shigella, tuberculosis, Clostridioides difficile
- Parasites: Entamoeba histolytica
- Viruses: CMV
- Microscopic colitis
- Ischemic colitis
- Drug-induced colitis, including from NSAIDs, aspirin, PPIs, beta blockers, statins
- Primary immunodeficiency, including CVID
- Radiation colitis
