What Is Hepatitis D?
Hepatitis D is a viral infection that causes liver inflammation and damage. Inflammation is swelling that occurs when tissues of the body become injured or infected. Inflammation can damage organs.
Viruses invade normal cells in your body. Many viruses cause infections that can spread from person to person.
The hepatitis D virus is unusual because it can only infect you when you also have a hepatitis B virus infection. In this way, hepatitis D is a double infection. You can protect yourself from hepatitis D by protecting yourself from hepatitis B by getting the hepatitis B vaccine.
Hepatitis D spreads the same way that hepatitis B spreads, through contact with an infected person’s blood or other body fluids.
The hepatitis D virus can cause an acute or chronic infection, or both.
Acute hepatitis D
Acute hepatitis D is a short-term infection. The symptoms of acute hepatitis D are the same as the symptoms of any type of hepatitis and are often more severe. Sometimes your body is able to fight off the infection and the virus goes away.
Chronic hepatitis D
Chronic hepatitis D is a long-lasting infection. Chronic hepatitis D occurs when your body is not able to fight off the virus and the virus does not go away. People who have chronic hepatitis B and D develop complications more often and more quickly than people who have chronic hepatitis B alone.
Source: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)