What causes yellow baby faces?

Baby face yellowing is common in neonatal jaundice, neonatal jaundice is divided into physiological and pathological, physiological is more common in 2~3 days after birth, pathological in 24 hours after birth, is due to elevated bilirubin levels in the baby, physiological will improve within two weeks after birth, pathological may be biliary obstruction, breast milk jaundice caused by, need to find out the cause symptomatic treatment.