What Chronic Diarrhea Is Telling You
Chronic diarrhea means >3 loose or watery stools per day for more than four weeks. It is not a disease itself but a common end-point of many mechanisms. Here is a rapid overview from cause to clinic. 1. Osmotic diarrhea Unabsorbed solutes (lactose, fructose, sorbitol, Mg-antacids) hold water in the lumen; stool output falls markedly when the patient stops eating the offending sugar or salt. 2. Secretory diarrhea The mucosa actively pours water and electrolytes into the gut; fasting does not stop the flood. Think hyperthyroidism, adrenal insufficiency, gastrinoma, VIPoma, bile-acid malabsorption or chronic alcohol abuse. 3. Malabsorption / steatorrhoea... Learn more