Hepatitis B is a liver disease. It can be acute or chronic. Acute hepatitis B usually goes away on its own and may not need treatment.
Chronic hepatitis B is an infection that lasts more than 6 months. Chronic infection can lead to other health problems. Hepatitis B is treated with antiviral medications.
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Hepatitis B is caused by a virus. The virus causes swelling and irritation in the liver and makes it difficult for the liver to function normally.
The hepatitis B virus (HBV) is spread by semen, vaginal secretions, saliva, blood, or body fluids from an infected person. The virus can pass from these fluids to your body through an open cut in your skin.
A woman with hepatitis can also pass HBV to her baby during childbirth.
Factors that may increase your chances of hepatitis B:
- Illicit drug injection use, especially when sharing needles
- Unprotected sexual contact, especially with multiple partners
- Sharing a residence and/or personal items with someone who has HBV
- Stay in hospital or long-term care facility
- Hemodialysis treatment
- Work that includes contact with blood or body fluids, such as health care or public safety workers
- Travel to areas where HBV is common
It is possible that someone infected with HBV may never have symptoms of hepatitis B.
If symptoms do develop, they appear around 60-150 days after exposure. Hepatitis B may cause:
- Fatigue that lasts for weeks or months
- Loss of appetite
- Nausea or vomiting
- Low-grade fever
- Jaundice —a yellowing skin and eyes
- Abdominal pain in the upper right side of the abdomen
- Joint pain
- Dark urine and light-colored stool
Chronic hepatitis can lead to serious health problems including:
The doctor will ask about your symptoms and medical history. A physical exam will be done. Hepatitis B is diagnosed with blood tests. Blood tests are also used to monitor changes in the liver.
For chronic cases, a liver biopsy may be needed.
Acute infection may not need any treatment since it usually goes away on its own.
Chronic hepatitis B may be treated with a combination of different antiviral medications. All medications do not work the same in all people. Talk with your doctor about the best treatment plan for you.
Your doctor may also ask that you:
- Avoid alcohol
- Avoid certain medications, dietary supplements, and herbs
- Contact recent sexual partners so they can be tested and/or treated
There is a vaccine for hepatitis B that is available for adults. This vaccine is usually given as a series of 3 injections. In addition, the vaccine is routinely given to newborns. Children and teens who were not vaccinated as babies can still receive the shots.
Other prevention strategies include:
- Use condoms regularly or limit the number of sexual partners.
- Do not inject drugs. If you use IV drugs, get treatment to help you stop. Never share needles or syringes.
- Do not share personal items that may have blood or body fluids on them.
- Make sure a tattoo artist or piercer properly sterilizes the equipment.
- Wear gloves when touching or cleaning up body fluids on personal items.
- Cover open cuts or wounds.
- If you are pregnant, have a blood test for hepatitis B. Infants born to mothers with hepatitis B should be treated within 12 hours after birth.
- Go to regular check ups and get tested for hepatitis B and other sexually transmitted infections (STIs) as advised.
American Liver Foundation
Hepatitis B Foundation
Canadian Institute for Health Information
Canadian Liver Foundation
Sexually transmitted diseases treatment guidelines. Centers for Disease Control and Prevention website. Available at: https://www.cdc.gov/std/tg2015/default.htm. Accessed January 29, 2021.
Acute hepatitis B virus (HBV) infection. EBSCO DynaMed website. Available at:http://www.dynamed.com/topics/dmp~AN~T913216/Acute-hepatitis-B-virus-HBV-infection. Accessed January 29, 2021.
Chronic hepatitis B virus (HBV) infection. EBSCO DynaMed website. Available at:http://www.dynamed.com/topics/dmp~AN~T115624/Chronic-hepatitis-B-virus-HBV-infection. Accessed January 29, 2021.
Hepatitis B. American Liver Foundation website. Available at: https://www.liverfoundation.org/for-patients/about-the-liver/diseases-of-the-liver/hepatitis-b. Accessed January 29, 2021.
Immunization schedules. Centers for Disease Control and Prevention website. Available at: https://www.cdc.gov/vaccines/schedules/index.html. Accessed January 29, 2021.
Know hepatitis B. Centers for Disease Control and Prevention website. Available at: https://www.cdc.gov/knowhepatitisb. Accessed January 29, 2021.
10/8/2014 DynaMed Plus Systematic Literature Surveillancehttp://www.dynamed.com/topics/dmp~AN~T115624/Hepatitis-B-virus-HBV-infection: British Association of Sexual Health and HIV (BASHH) recommendations on testing for sexually transmitted infections in men who have sex with men. Available at: http://www.bashh.org/documents/BASHH%20Recommendations%20for%20testing%20for%20STIs%20in%20MSM%20-%20FINAL.pdf. Updated 2014.
Last reviewed March 2020 by EBSCO Medical Review Board David L. Horn, MD, FACP Last Updated: 1/29/2021