A 2-week-old newborn is brought to the physician for a 10-day history of increasingly yellow eyes and skin. She was born to a 22-year-old woman, G2P2, following an uncomplicated pregnancy and delivery. She is exclusively breast-fed and is having difficulty attaching to the breast during feeds. Total bilirubin is 15 mg/dL with a direct component of 12 mg/dL. Which of the following is the most likely diagnosis?
Biliary atresia
Breastfeeding jaundice
Breast milk jaundice
Crigler-Najjar syndrome
Physiologic jaundice
