The vast majority of newborns may have physiologic jaundice, which usually subsides in 5 to 7 days in full-term infants, and no later than 2 weeks. In preterm infants, it subsides in 7 to 9 days and can be delayed up to 3 to 4 weeks. Pathologic jaundice requires treatment.
After birth, most newborns may have a temporary increase in serum bilirubin early in life because bilirubin production is greater than bilirubin excretion. In general, physiologic jaundice usually appears 2-3 days after birth in term infants, peaks in 4-5 days, subsides in 5-7 days, and does not subside for more than 2 weeks at the latest.
Physiologic jaundice in preterm infants mostly appears 3 to 5 days after birth, peaks in 5 to 7 days, subsides in 7 to 9 days, and can be delayed up to 3 to 4 weeks.
Baby’s jaundice will generally follow the above pattern, if the baby’s jaundice rises faster every day or subsides later, or combined with poor spirit, poor lactation, etc., it may be pathologic jaundice, and you should go to the hospital in time to avoid serious adverse consequences.