Inflammatory diarrhea

(⊕ fecal WBC, calprotectin, lactoferrin; ⊕ FOB; fever, abd pain)

• Infections: chronic C. diff, Entamoeba histolytica, Yersinia, CMV colitis, TB especially in immunocompromised hosts. CMV, C. diff notorious for causing exacerbations of IBD.

• Inflammatory bowel disease (Crohn’s, UC); fecal calprotectin helpful for ruling out IBD

• Radiation enteritis, ischemic colitis, neoplasia (colon cancer, lymphoma)