17715 Primary Biliary Cholangitis Pbc

Overview

Primary biliary cholangitis, often called PBC, is a long-term liver condition. In PBC, the body's immune system mistakenly attacks the small bile ducts inside the liver. Bile is a fluid that helps digest food and removes waste. When these ducts become damaged, bile builds up and can harm the liver over time. PBC is not caused by alcohol or lifestyle choices.

PBC is not very common. It affects roughly 1 in 1,000 people in the UK, though many cases are mild and may not be diagnosed.

PBC is most common in women, especially between the ages of 40 and 60. However, men, younger adults, and occasionally children can also develop it.

Symptoms

Common symptoms

• Feeling very tired (fatigue) even after a good night's sleep
• Itchy skin that is not caused by a rash or dry skin
• Dry eyes and a dry mouth
• Pain or discomfort in the upper right side of the tummy
• Yellowing of the skin or eyes (jaundice) — often a later sign
• Dark urine or pale stools
• Unexplained weight loss

Symptoms in children

• PBC is very rare in children. When it does occur, symptoms are similar to adults, including fatigue, itching, and poor growth or weight gain.

Symptoms in older adults

• Older adults may describe itching or tiredness as 'just part of getting older'. It is important not to dismiss these symptoms, as they can be signs of a treatable liver condition.

Causes

Main causes

• The exact cause of PBC is not fully known. It happens when the immune system attacks the small bile ducts in the liver.
• A combination of genetic (inherited) factors and environmental triggers, such as an infection, may play a role.

Risk factors

• Being female
• Having a family member with PBC
• Being between 40 and 60 years old
• Having another autoimmune condition, such as thyroid disease, Sjögren's syndrome, or Raynaud's phenomenon
• Smoking may increase the risk

When to see a doctor

See a doctor urgently if:

• If you have vomiting blood or black stools
• If you have sudden confusion or are hard to wake
• If you have severe tummy pain

Book a routine appointment if:

• See your GP if you have persistent itching, unusual tiredness, or yellowing of the skin or eyes.
• Mention any family history of liver disease or autoimmune conditions.
• If you already have PBC, have regular check-ups as recommended by your specialist.

Diagnosis

Doctors usually diagnose PBC through a combination of blood tests and sometimes imaging scans. If the diagnosis is unclear, a small liver sample (biopsy) may be taken.

Tests that may be done

• Liver function tests — blood tests that look at liver enzymes
• Tests for specific antibodies (anti-mitochondrial antibodies, called AMA) that are present in most people with PBC
• Ultrasound scan of the liver to rule out other problems
• Magnetic resonance cholangiopancreatography (MRCP) — a scan to look at the bile ducts
• Liver biopsy (a small needle sample) if needed

What to expect at your appointment

Your GP may refer you to a liver specialist (hepatologist). The specialist will explain your results, order any extra tests, and discuss a care plan with you. PBC is a long-term condition, so you will have regular check-ups to monitor how your liver is doing.

Treatment

Treatment for PBC aims to slow the damage to the liver, reduce symptoms like itching, and prevent complications. There is no cure, but most people respond well to treatment and remain stable for many years.

Self-care at home

• Take any prescribed medicines regularly, even if you feel well.
• Keep all follow-up appointments with your liver team.
• Avoid alcohol — ask your doctor how much is safe for you (often none).
• Maintain a healthy weight and stay physically active.
• Manage itching with cool baths, gentle moisturisers, and loose clothing.
• Tell your doctor about any over-the-counter products you use, including herbal remedies.

Medical treatments

A group of medicines called ursodeoxycholic acid (UDCA) is commonly used as first-line treatment for PBC. It is not a brand name but a type of treatment; your doctor will advise if it is right for you. Other medicines may be added if UDCA alone is not enough. There are options for managing severe itching, dry eyes, and other symptoms. Always discuss your treatment plan with a qualified healthcare provider.

When is surgery considered?

Surgery is not usually needed for PBC. In advanced liver damage, a liver transplant may be considered, but this is reserved for severe cases where the liver is failing and other treatments no longer work.

Living with this condition

Living with PBC means managing fatigue and itching while keeping your liver as healthy as possible. Many people feel fine for years, but it is normal to have ups and downs. Listen to your body — rest when you need to, and ask for help with heavy tasks or long days.

Lifestyle tips

• Stay active with gentle exercise like walking, swimming, or yoga.
• Avoid alcohol completely, or follow your doctor's advice — alcohol can make liver damage worse.
• Don't smoke; ask your healthcare team for support to quit.
• Get vaccinated against hepatitis A and hepatitis B if your doctor recommends it.
• Keep a routine with regular meals and sleep to help manage fatigue.

Diet and exercise

Eat a balanced diet with plenty of fruits, vegetables, whole grains, and lean protein. If your liver is more advanced, you may need to adjust protein or salt intake — a dietitian can help. Regular exercise helps maintain muscle strength, bone health, and energy levels, but do not push yourself beyond your limits.

Mental health and emotional wellbeing

Living with a chronic condition can be stressful and emotionally draining. It is common to feel anxious, low, or frustrated. If you notice these feelings persisting, talk to your GP or healthcare team. You are not alone, and seeking support is a sign of strength.

Prevention

PBC cannot be prevented because it is an autoimmune condition. However, early diagnosis and regular treatment can slow its progression and reduce complications.

Vaccines

People with liver disease may be advised to have vaccines against hepatitis A, hepatitis B, and other infections. Ask your healthcare provider about which vaccines are recommended for you.

Screening programmes

If you have a close relative with PBC, tell your doctor. They may recommend periodic liver blood tests to detect the condition early, even if you have no symptoms.

Complications

If left untreated

• Scarring of the liver (cirrhosis) over many years
• Buildup of fluid in the tummy (ascites)
• Weak bones (osteoporosis) due to poor absorption of fat and vitamins
• High cholesterol levels
• Increased risk of liver cancer in advanced disease
• Liver failure in severe cases

Long-term outlook

The outlook for PBC has improved greatly in recent decades. Most people with PBC live for many years with a good quality of life, especially when the condition is found early and treated consistently. Some people do develop liver cirrhosis, but even then, many respond well to treatment and remain stable for a long time. With regular care and a healthy lifestyle, you can still enjoy work, family, travel, and the activities you love.

Find support

International organisations

• PBC Foundation ↗

Local organisations

• British Liver Trust ↗ · United Kingdom

Helplines

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