What is Jaundice in infants ? What is infant jaundice?  Infant jaundice or neonatal jaundice is the yellowish discoloration of the skin, scleral part of eyes, inside of mouth, etc. due to the excess build up of the yellow pigment called bilirubin in the blood. The doctors say it Neonatal jaundice, means the jaundice that appears in the newborn babies (also called neonates).   Jaundice in the neonates and infants is a common physiological disorder as it is a result of rbc breakdown which produces bilirubin.  The destruction and production of red blood cells is fast in the infants and their liver is comparatively immature to handle the overload.  Due to this reason, the bilirubin gets collected more in the blood of babies making them appear yellowish.  Yellow color of the skin and eyes is a result of high bilirubin levels in the blood of the babies. It is normal in babies and may start appearing within 72 hours. Your baby's doctor will examine your baby for p...