Jaundice is a medical condition caused by high bilirubin levels in the bloodstream, which results in yellowing of the skin and eyes. Bilirubin is produced as a byproduct of red blood cell breakdown. There are three main types of jaundice - hepatocellular caused by liver damage, hemolytic from rapid red blood cell breakdown, and obstructive from bile duct blockage. Symptoms include yellow skin and eyes, itching, dark urine, and fatigue. Jaundice is diagnosed through blood tests measuring bilirubin levels and liver function. The underlying cause determines treatment, which may include surgery to clear bile duct obstructions.