What are the common causes of pus cells in stool?

Colitis : Pus cells or fecal white blood cells or leukocytes indicate inflammatory process in the bowel. Broadly there are two main causes; infectious and noninfectious. Infectious causes are primarily bacteria such as e. Coli, salmonella, campylobacter, listeria, c. Difficile, shigella. Noninfectious most common causes are crohn's disease and ulcerative colitis but can include ischemia. www.thefooddoc.com.