Phase 1 · Understand the Body — Why the disease behaves the way it does.
The One-Line Truth
The whole disease in one chain
Everything on this page exists to explain this line.
Digestive enzymes wake up too early—inside the pancreas instead of waiting until they reach the small intestine—so the gland starts digesting itself.
Factory fire spreads through the building
Imagine a chocolate factory where workers (acinar cells) carefully package cocoa powder (digestive enzymes) in sealed bags (zymogens) and load them onto a delivery truck (the pancreatic duct) headed for the candy store (small intestine). Normally, the powder stays inert until it reaches the store. But one day, a bag ruptures inside the factory—either because a stone blocks the truck's exit (gallstone at ampulla), a worker spills toxic chemicals on the bags (alcohol damages acinar cells), or pressure builds up so high the bags burst (duct obstruction). Now active cocoa powder is everywhere inside the factory, burning and destroying the building from the inside out (pancreatic autodigestion). Smoke (inflammatory cytokines) pours out the windows and spreads through the whole town (systemic inflammation), making people sick blocks away (SIRS, organ failure). Rescue workers arriving days later find the burnt-out factory crawling with rats from the sewers (bacterial translocation from gut), turning a bad fire into a catastrophe (infected tissue death (necrosis)).
American College of Gastroenterology (ACG) Clinical Guideline: Management of Acute Pancreatitis 2013 · American Gastroenterological Association (AGA) Institute Guideline on Initial Management of Acute Pancreatitis 2018 · International Association of Pancreatology / American Pancreatic Association (IAP/APA) Guidelines 2013 · Cochrane systematic reviews on fluid resuscitation and feeding in acute pancreatitis · reviewed 2026-07-07