Cirrhosis is most commonly caused by hepatitis C virus (HCV), alcoholic liver disease, and nonalcoholic steatohepatitis (NASH) in the developed world, whereas hepatitis B virus (HBV) and HCV are the most common causes in the poor world. Cirrhosis can also be caused by other conditions such as autoimmune hepatitis, primary biliary cholangitis, primary sclerosing cholangitis, hemochromatosis, Wilson disease, alpha-1 antitrypsin deficiency, Budd-Chiari syndrome, drug-induced liver cirrhosis, and chronic right-sided heart failure.