Diarrhea with Normal Colonoscopy • Colonic: Bile acid malabsorption, Microscopic colitis, Overflow diarrhoea, Missed pathology • Small Bowel: Enteritis (e.g. Crohn's), Enteropathy (e.g. coeliac), Short bowel syndrome, Ischaemia / Vasculitis • Endocrine: Diabetes, Hyperthyroidism, Addison's, Hypoparathyroidism • Pancreatic: Pancreatic insufficiency, Pancreatic carcinoma, Cystic fibrosis • Infection: SIBO, Giardiasis, Campylobacter, C. diff, Viral (HIV, COVID-19) • Others: IBS-D, Drugs, Diet, Alcohol, Lymphoma, Surgery, MCAS, • NET, Autonomic neuropathy Dr. Keith Siau @drkeithsiau #Diarrhea #differential #diagnosis
