How long does premature jaundice return to normal?

Under normal circumstances, jaundice in normal newborns will subside in about seven to nine days. Premature infants due to various body functions are not fully developed, jaundice may subside later, but generally not more than four weeks. If it does not subside for a long time, it may be caused by pathological jaundice, parents need to take the baby to the hospital in time for examination.