Colonic |
Colonic neoplasia |
Ulcerative and Crohn’s colitis |
Microscopic colitis |
Small bowel |
Coeliac disease |
Crohn’s disease |
Other small bowel enteropathies (for example, Whipple’s disease, tropical sprue, amyloid, intestinal lymphangiectasia) |
Bile acid malabsorption |
Disaccharidase deficiency |
Small bowel bacterial overgrowth |
Mesenteric ischaemia |
Radiation enteritis |
Lymphoma |
Giardiasis (and other chronic infection) |
Pancreatic |
Chronic pancreatitis |
Pancreatic carcinoma |
Cystic fibrosis |
Endocrine |
Hyperthyroidism |
Diabetes |
Hypoparathyroidism |
Addison’s disease |
Hormone secreting tumours (VIPoma, gastrinoma, carcinoid) |
Other |
Factitious diarrhoea |
“Surgical” causes (e.g. small bowel resections, internal fistulae) |
Drugs |
Alcohol |
Autonomic neuropathy |