Jaundice, or yellowish discoloration of the skin and eyes, is caused by high levels of bilirubin in the blood. It can be a sign of several underlying diseases affecting the production, metabolism, or excretion of bilirubin in the liver or gallbladder. Jaundice is classified as pre-hepatic, hepatic, or post-hepatic depending on where in the process the underlying pathology occurs. Diagnosis involves physical examination, blood tests, and imaging tests to determine the specific cause. Treatment targets the underlying cause and aims to correct complications like infection, coagulopathy, or organ damage.