Newborns produce bilirubin at a rate that exceeds adults due to the relative polycythemia and increased RBC turnover..<unk>  is an indirect hyperbilirubinemia in<unk> fed newborn that develops within the first  4-7 days of life.
It does not generally cause kernicterus.
It does not generally cause kernicterus.
The etiology is unknown  but may be related to inflammatory cytokines in human milk and the presence epidermal growth factor.
Breast milk jaundice
More common causes are listed first, followed by less common causes
Breast feeding jaundice
Neonatal jaundice
Due to substances in milk that inhibits glucuronyl transferase. It may start as early as 3rd day and reaches peak by 3rd week of life. It is unlikely to cause kernicterus
Biliary atresia
Neonatal hypoglycemia
Patient does not receive adequate oral intake which then causes reduced bowel movement/bilirubin excretion. Best diagnosed by looking for signs of dehydration and comparing weight to birth weight.