较重黄疸病人大量的胆红素在血液中循环导致皮肤黄染，在体格检查中容易发现，最容易观察的部位在巩膜。
Increased amounts of circulating bilirubin in the blood can lead to the physical examination finding of "icterus" or jaundice as seen here from the yellowish hue of the skin. The easiest place to see icterus is on the sclera of the eye.