<unk>  is an inflammation, with swelling, of the liver, most commonly caused by a viral infection. There are five main<unk>  viruses, referred to as types A, B, C, D, and E. These five types are of greatest concern because of the burden of illness and death they cause and the potential for outbreaks and epidemic spread. In particular, types B and C lead to chronic disease in hundreds of millions of people and, together, are the most common cause of liver cirrhosis and cancer.<unk>  A and E are typically caused by ingestion of contaminated food or water.<unk>  B, C and D usually occur as a result of parenteral contact with infected body fluids. Common modes of transmission for these viruses include receipt of contaminated blood or blood products, invasive medical procedures using contaminated equipment and for<unk>  B transmission from mother to baby at birth, from family member to child, and also by sexual contact.
Acute infection may occur with limited or no symptoms, or may include symptoms such as jaundice (yellowing of the skin and eyes), dark urine, extreme fatigue, nausea, vomiting and abdominal pain.
Drinking alcohol or taking drugs (whether legal, illegal or prescription) can also cause other types of<unk> .
Hepatitis
Alcoholic hepatitis
Alcoholic liver disease
Fatty liver
Cirrhosis
Cholestasis
Lupoid hepatitis
AIDS