More common causes are listed first, followed by less common causes
Breast milk 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
Breast feeding jaundice
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.
Blood group incompatibility: ABO, Rh factor, minor antigens
Diabetic mother/gestational diabetes
Internal hemorrhage
Physiologic jaundice
Polycythemia
Sepsis
Hemoglobinopathies: thalassemia
Red blood cell enzyme defects: G6PD Deficiency, pyruvate kinase
Red blood cell membrane disorders: spherocytosis, ovalocytosis
Hypothyroidism
Immune thrombocytopenic purpura
Mutations of glucuronyl transferase (i.e., Crigler-Najjar syndrome, Gilbert syndrome)
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
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.
Conjugated bilirubinemia implies a hepatic or post hepatic cause. More common causes are listed first.
Hyperalimentation cholestasis<unk>  hepatitis
Cytomegalovirus infection
Sepsis
TORCH infection (toxoplasma, other/syphilis, rubella, CMV, HSV)
Biliary atresia
Cystic fibrosis
Hepatic infarction
Inborn errors of metabolism (e.g., galactosemia, tyrosinosis)
Neonatal jaundice
More common causes are listed first, followed by less common causes
Breast milk jaundice
Breast feeding 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.