Chronic Liver Disease

How chronic liver disease progresses

The liver repairs itself well after short-term injury. With ongoing injury, repair produces scar tissue. Doctors grade scarring from F0 (none) to F4 (cirrhosis).

1. Inflammation and fat buildup: often no symptoms.
2. Fibrosis: scar tissue forms. This stage can reverse if the cause is removed.
3. Compensated cirrhosis: extensive scarring, but the liver still copes. Many people feel well.
4. Decompensated cirrhosis: complications appear, such as ascites, variceal bleeding, jaundice and hepatic encephalopathy.
5. End-stage liver disease: liver failure; transplant may be the only option.

People with cirrhosis also have a higher risk of liver cancer.

Causes

• Metabolic dysfunction-associated steatotic liver disease (MASLD), formerly NAFLD: fat buildup linked to obesity, type 2 diabetes, high blood pressure and high cholesterol. Its inflammatory form, MASH (formerly NASH), drives fibrosis. It is now the most common cause. See nonalcoholic liver disease.
• Alcohol-related liver disease.
• Viral hepatitis: hepatitis B and hepatitis C.
• Autoimmune diseases: autoimmune hepatitis, primary biliary cholangitis and primary sclerosing cholangitis.
• Inherited conditions: hemochromatosis (iron overload), Wilson disease (copper), alpha-1 antitrypsin deficiency.
• Medicines and toxins over long periods.
• Heart failure causing congestion of the liver.

Symptoms

Early disease is often silent. As damage progresses:

• tiredness and weakness
• loss of appetite, nausea and weight loss with muscle wasting
• itching
• easy bruising and nosebleeds
• small spider-like blood vessels on the chest
• red palms
• in men, breast enlargement and shrinking testicles

Signs of decompensation:

• jaundice
• ascites (fluid in the belly) and swollen legs
• vomiting blood or black stools from varices
• confusion, sleep reversal and drowsiness (hepatic encephalopathy)

Diagnosis

• Liver blood tests: ALT, AST, alkaline phosphatase, bilirubin, albumin and INR (clotting). Normal enzymes do not exclude advanced disease.
• Cause screening: hepatitis B and C tests, iron studies, autoimmune antibodies, ceruloplasmin, alpha-1 antitrypsin.
• Fibrosis assessment: blood-based scores such as FIB-4, and transient elastography (FibroScan) to measure liver stiffness.
• Ultrasound, CT or MRI for liver texture, size and tumors.
• Liver biopsy when the cause or stage is unclear.
• Endoscopy to look for varices in cirrhosis.

Treatment

Treat the cause

• MASLD: losing 7 to 10 percent of body weight can reduce liver fat, inflammation and fibrosis. Control diabetes, blood pressure and cholesterol. Resmetirom is FDA-approved for MASH with moderate to advanced fibrosis, and semaglutide (a GLP-1 medicine) was approved for the same use in 2025.
• Alcohol: stopping completely is the most important step. Support programs and medicines help.
• Hepatitis C: 8 to 12 weeks of antiviral tablets cure over 95 percent of people.
• Hepatitis B: antiviral medicines suppress the virus long term.
• Autoimmune and inherited causes: immune-suppressing medicines, venesection for hemochromatosis, copper chelation for Wilson disease.

Protect the liver

• Avoid alcohol in all chronic liver disease.
• Check all medicines and supplements with your doctor. Acetaminophen (paracetamol) in modest doses is usually safer than NSAIDs, which can harm the kidneys and cause bleeding in cirrhosis.
• Get vaccinated against hepatitis A and B, flu and pneumococcus.

Manage cirrhosis complications

• diuretics and salt restriction for ascites
• beta blockers or banding for varices
• lactulose and rifaximin for encephalopathy
• liver cancer screening with ultrasound every 6 months
• nutrition support with adequate protein

Liver transplant

For end-stage disease or some liver cancers, transplant offers excellent long-term survival.

Prevention

• Keep alcohol within recommended limits or avoid it.
• Maintain a healthy weight and stay active.
• Get vaccinated against hepatitis B.
• Get tested for hepatitis C at least once as an adult, as the CDC recommends.
• Avoid sharing needles, razors and toothbrushes.

Frequently asked questions

What are the early signs of chronic liver disease?

Early chronic liver disease often has no symptoms. Some people feel tired or have vague discomfort in the upper right belly. It is usually found on routine blood tests or a scan. Jaundice, belly swelling and confusion appear only in advanced disease.

Can chronic liver disease be reversed?

Fibrosis can improve, and sometimes reverse, when the cause is removed, such as curing hepatitis C, stopping alcohol or losing weight in fatty liver disease. Established cirrhosis rarely reverses fully, but treatment can stabilize it and prevent complications.

What is the most common cause of chronic liver disease?

In the US, the most common cause is metabolic dysfunction-associated steatotic liver disease (fatty liver linked to obesity and diabetes), followed by alcohol and viral hepatitis.

How long can you live with chronic liver disease?

It varies greatly. Many people with early disease live normal lifespans if the cause is controlled. People with compensated cirrhosis often live many years. Once complications develop, outlook worsens, and transplant may be considered.