<prompt> The following are causes of secretory diarrhea exceptVibrio choleraInflammatory bowel diseaseLactose intoleranceGastrinoma  <response>: Causes of chronic diarrhea: 1.Osmotic diarrheacluesstool volume decreases with fasting, increased stool osmotic gap;i Medicationsantacids, lactulose, sorbitol,ii disaccharidase deficiencylactose intolerance,iii factitious diarrheamagnesium antacids, laxatives. 2. Secretory diarrheaclueslarge volume 1 Lday, little change with fasting, normal stool osmotic gap;i hormonally mediatedvipoma, carcinoid, medullary carcinoma of thyroid calcitonin, ZollingerEllisonsyndrome gastrin,ii factitious diarrhea laxative abuse, phenolphthalein, cascara, senna,iii villous adenoma,iv bile salt malabsorption ileal resection, Crohns ileitis, postcholecystectomy,v medications. 