What are the Causes of Jaundice?

Jaundice can be caused by several different problems:

• Physiological jaundice: This is the most common cause of newborn jaundice and occurs in more than 50% of babies. Because the baby has an immature liver, bilirubin is processed slower. The jaundice first appears at 2 to 3 days of age. It usually disappears by 1 to 2 weeks of age, and the levels of bilirubin are harmless.
• Breast-feeding jaundice: Breast-feeding jaundice may occur when your baby does not drink enough breast milk. It occurs in 5% to 10% of newborns. The jaundice symptoms are similar to those of physiological jaundice, just more pronounced. The jaundice indicates a need for help with breast-feeding.
• Breast-milk jaundice: Breast-milk jaundice occurs in 1% to 2% of breast-fed babies. It is caused by a special substance that some mothers produce in their milk. This substance causes your baby's intestine to absorb more bilirubin back into his body than normal. This type of jaundice starts at 4 to 7 days of age. It may last 3 to 10 weeks. It is not harmful.
• Blood group incompatibility (Rh or ABO problems): If a baby and mother have different blood types, sometimes the mother produces antibodies that destroy the newborn's red blood cells. This causes a sudden buildup of bilirubin in the baby's blood. This serious type of jaundice usually begins during the first 24 hours of life. Rh problems formerly caused the most severe form of jaundice. However, they are now preventable if the mother is given an injection of RhoGAM within 72 hours after delivery. This prevents her from forming antibodies that might endanger other babies she has in the future

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