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Definition

By Mayo Clinic staff

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Illustration showing the liver, located above the stomach The liver

Hepatitis B is a serious liver infection caused by the hepatitis B virus (HBV). For some people, hepatitis B infection becomes chronic, leading to liver failure, liver cancer or cirrhosis — a condition that causes permanent scarring of the liver.

Most people infected with hepatitis B as adults recover fully, even if their signs and symptoms are severe. Infants and children are much more likely to develop a chronic hepatitis B infection. Although no cure exists for hepatitis B, a vaccine can prevent the disease. If you're already infected, taking certain precautions can help prevent spreading HBV to others.

Symptoms
References
  1. Perillo R. Hepatitis B and D. In: Feldman M, et al. Sleisenger & Fordtran's Gastrointestinal and Liver Disease: Pathophysiology, Diagnosis, Management. 9th ed. Philadelphia, Pa.: Saunders Elsevier; 2010. http://www.mdconsult.com/books/about.do?eid=4-u1.0-B978-1-4160-6189-2..X0001-7--TOP&isbn=978-1-4160-6189-2&about=true&uniqId=229935664-2192. Accessed July 25, 2011.
  2. Lok ASF, et al. Chronic hepatitis B: Update 2009. Hepatology. 2009;50:1.
  3. Hepatitis B FAQs for the public. Centers for Disease Control and Prevention. http://www.cdc.gov/hepatitis/B/bFAQ.htm. Accessed July 25, 2011.
  4. What I need to know about hepatitis B. National Institute of Diabetes and Digestive and Kidney Diseases. http://digestive.niddk.nih.gov/ddiseases/pubs/hepb_ez/. Accessed July 25, 2011.
  5. Hepatitis B. Lab Tests Online. http://labtestsonline.org/understanding/analytes/hepatitis-b/tab/glance. Accessed Aug. 1, 2011.
  6. Milk thistle. National Center for Complementary and Alternative Medicine. http://nccam.nih.gov/health/milkthistle/ataglance.htm. Accessed July 25, 2011.
DS00398 Sept. 1, 2011

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