Chronic Diarrhea

• Secretory Causes
  
• Medications
  
• Bowel Resection, Mucosal Disease, Enterocolic Fistula
  
• Hormones
  
  
  
  • Carcinoid Tumor
    
  • Serotonin
    
  • Histamine
    
  • Prostaglandins
    
  • Kinins
    
  • Gastrinoma
    
  • VIPoma
    
  • Calcitonin
    
  • Somatostatinoma
    
  
  
• Congenital Defects in Ion Absorption
  
• Osmotic Causes
  
• Osmotic Laxatives
  
• Carbohydrate Malabsorption
  
• Steatorrheal Causes
  
• Pancreatic Exocrine Insufficiency
  
  
  
  • Chronic Pancreatitis
    
  • Cystic Fibrosis
    
  • Pancreatic Duct Obstruction
    
  
  
• Mucosal Malabsorption
  
  
  
  • Tropical Sprue
    
  • Whipple's Disease
    
  • Abetalipoproteinemia
    
  • Medications - colchicine, cholestyramine, neomycin
    
  • Chronic Ischemia
    
  
  
• Postmucosal Lymphatic Obstruction
  
• Inflammatory Causes
  
• Idiopathic Inflammatory Bowel Disease
  
• Eosinophilic Gastroenteritis