Itching during cholestasis of pregnancy is due retained :
Bilirubin
Bile acids
Alkaline phosphatase
Bile salts
Intrahepatic cholestasis and pruritus gravidarum Results from retained bile salts. Linked to high circulating levels of estrogen, which inhibit intraductal transpo of bile acids. Rx - Ursodeoxycholic acid
Medical Illness Complicating Pregnancy