What is the reason for the newborn jaundice to decrease and then rise again?

Patient's question:

The baby is six months old, but the jaundice has decreased and then increased again. As a new mother, I'm a bit confused and don't know why. What could be the reason for the newborn's jaundice to decrease and then rise again?

Doctor's answer:

As long as the child is doing well overall in terms of feeding, weight gain, etc., there is no need to worry about the jaundice index, as it doesn't interfere much with a healthy baby's health. After treatment, not overfeeding the baby can lead to increased fluid intake and enhanced urination, which can help lower bilirubin levels. It may be that the cause of the jaundice hasn't been fully addressed, and while blue light treatment can reduce bilirubin in the superficial layers of the skin, the bilirubin in the blood or other organs may still remain, potentially reappearing on the skin's surface.

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