What is Neonatal Jaundice - Neonatal Jaundice is a yellowish discoloration of the skin mucous membrane and sclera. Sclera is the white of the eyes of the new born babies the peak incident will be the 3rd day to 5th day of life and the incident being around 70% in all the babies, the clinical features wise a yellowish discoloration of the face, forehead and slowly it spreads to the chest abdomen and the feet