Sunday, January 23, 2011

Etiological classification of Diarrhea.

Malabsorption

Defective intraluminal digestion
Primary mucosal cell abnormalities
Reduced small intestinal surface area
Lymphatic obstruction
Infectious: impaired mucosal cell absorption, eg Giardia

Decreased intestinal transit time

Surgical reduction of gut length
Neural dysfunction, including irritable bowel syndrome
Hyperthyroidism
Diabetic neuropathy
Carcinoid syndrome

Decreased motility (increased intestinal transit time)

Small intestinal diverticula
Surgical creation of a "blind" intestinal loop
Bacterial overgrowth in the small intestine

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