<unk>  occurs within the first first week of life and overlaps with<unk>  milk jaundice and physiologic jaundice.
Is the result of inadequate<unk>  milk volume and neonatal volume contraction relative to the amount of bilirubin.
Jaundice within the first 4-7 days of life
Scleral icterus
Lethargy, if progression to severe elevation
Unlikely when caused by a benign process (e.g.<unk>  milk jaundice,<unk> 
Unlikely when caused by a benign process (e.g.<unk>  milk jaundice,<unk>
Breast feeding jaundice
More common causes are listed first, followed by less common causes
Breast milk 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 rashes
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.