Final answer:
Post hepatic liver disease is characterized by an obstruction of bile flow, often caused by conditions that block the bile ducts and result in conjugated bilirubin accumulation in the blood.
Step-by-step explanation:
Post hepatic liver disease refers to a type of problem that is associated with obstruction of bile flow. This obstruction can be due to various conditions such as gallstones, tumors, or strictures that block the hepatic or common bile ducts, leading to a condition known as obstructive jaundice.
The increase in conjugated bilirubin in the blood characterizes this type of jaundice. Conditions like primary sclerosing cholangitis and Budd-Chiari syndrome could also lead to post-hepatic issues. It is important to note that it is different from problems caused by direct damage to liver cells, such as chronic liver failure, cirrhosis, or hepatitis, which are not post-hepatic.