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Often, physiologic jaundice -- the type seen in most newborns -- usually requires no treatment; it will typically disappear in a few days. Doctors will test the baby's bilirubin levels during that time to make sure it has not gotten worse. If needed, treatment under lights for a few days will help clear up the jaundice.
In rare cases, bilirubin levels become too high very quickly. Special blood tests will help determine the cause -- possibly an infection, a liver problem at birth, a blood problem, or a problem related to breastfeeding. Read more about jaundice in babies and children.