i think it should be circulatory... it i s due to faulty breakdown of rbcs.............. blockage/..... can only be triggers if anything...

Digestive system

jaundice usually indicates liver disease.itz due to excess bilirubin(yellow pigment) in d blood. Aftr bilirubin is formed frm d breakdown of heme pigment in aged RBCs, it is transported to d liver n then excreted into bile.

3 types of jaundice:

Prehepatic jaundice: due to excess production of bilirubin.

Hepatic jaundice: due to congenital liver disease, cirrhosis of liver or hepatitis

Extrahepatic jaundice: due to blockage of bile drainage by gallstones or cancer of d bowel

Jaundice is a digestive system disesse.

Source----

http://www.britannica.com/EBchecked/topic/163199/digestive-system-disease/45451/Jaundice