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.
A scarred liver that can no longer hold things together.
A dam breaking into a failing city
Imagine a water treatment plant (the liver) that sits between a reservoir (intestines/spleen) and a city (the rest of your body). For years, sediment clogs the plant's filters until water cannot flow through anymore — that clogging is scar tissue. Water pressure builds up behind the dam (portal high blood pressure (hypertension)), so the city opens emergency bypass channels through fragile, hastily-built pipes in the neighborhoods (collateral veins forming varices). Meanwhile, the treatment plant is so damaged it cannot make the chemicals that keep water clean (albumin and clotting factors fail) or remove poisons (ammonia builds up). The backup water seeps into cellars and yards instead of flowing to the city (ascites). When pressure gets too high, the emergency pipes burst and flood the streets (variceal bleeding). The city's water pressure drops, the fire department cannot get water (kidneys think they are dehydrated and shut down), and disease spreads through contaminated standing water (infection). All these failures happen at once because they all stem from one broken filter.
AASLD (American Association for the Study of Liver Diseases) Practice Guidance on Decompensated Cirrhosis 2021 · Hepatology journal consensus guidelines · EASL (European Association for the Study of the Liver) Clinical Practice Guidelines · reviewed 2026-07-07