Acute liver failure – when to seek medical help?

Acute liver failure is a rare but serious condition in which the liver suddenly stops functioning properly. Unlike chronic liver disease, which develops over time, acute liver failure can occur rapidly, sometimes within days or weeks, in a person who previously had no known liver problems. Recognising the symptoms early and seeking immediate medical care is vital, as the condition can become life-threatening without prompt treatment.

What is acute liver failure?

The liver performs essential functions, including filtering toxins, producing bile, processing nutrients and helping blood to clot. Acute liver failure happens when hepatocytes (liver cells) are damaged and can no longer carry out these vital tasks effectively. This causes a rapid decline in liver function and leads to a build-up of toxins in the bloodstream.

Common causes include:

• Viral hepatitis (particularly hepatitis A, B and E)
• Medication toxicity, most often from paracetamol (acetaminophen) overdose
• Reactions to prescription drugs or herbal supplements
• Autoimmune hepatitis
• Metabolic or vascular disorders

In many cases, no clear cause is identified, but prompt investigation and treatment are essential to prevent further damage.

What are the symptoms?

Symptoms of acute liver failure can develop quickly and may include:

• Nausea, vomiting and loss of appetite;
• Pain or tenderness in the upper right side of the abdomen;
• Jaundice (yellowing of the skin or eyes);
• Fatigue, confusion or difficulty concentrating;
• Easy bruising or bleeding;
• Swelling in the abdomen or legs.

As the condition progresses, toxins can affect the brain, leading to hepatic encephalopathy, which causes confusion, drowsiness or even coma.

When should you seek medical help?

You should seek immediate medical attention if you experience sudden jaundice, confusion, or persistent vomiting, particularly if you have recently taken new medication or consumed alcohol.

Acute liver failure is a medical emergency. Patients often require admission to a specialist liver unit where they can be closely monitored and receive supportive treatment. Early medical intervention significantly improves the chances of recovery.

How is acute liver failure treated?

Treatment depends on the cause and severity of liver damage. Management usually includes:

• Hospital admission for close observation and supportive care;
• Medication to treat underlying causes such as infection or autoimmune disease;
• Activated charcoal or antidotes for drug toxicity (e.g., N-acetylcysteine for paracetamol overdose);
• Management of complications, including fluid balance, bleeding and brain swelling.

In severe cases where the liver cannot recover, a liver transplant may be the only life-saving option.

Why early action saves lives

Acute liver failure can progress rapidly, sometimes within 24 to 48 hours. Early recognition and emergency care are crucial to prevent irreversible damage or fatal complications. Anyone experiencing symptoms such as jaundice, confusion or unexplained nausea should seek urgent assessment; early treatment offers the best chance of full recovery and long-term liver health.