Hormonal effects in newbornsNewborn breast swelling; Physiologic leukorrhea
Hormonal effects in newborns occur because in the womb, babies are exposed to many chemicals (hormones) that are in the mother's bloodstream. After birth, the infants are no longer exposed to these hormones. This exposure may cause temporary conditions in a newborn.
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Rennie JM. Examination of the newborn. In: Rennie J, ed. Rennie and Roberton's Textbook of Neonatology. 5th ed. Philadelphia, PA: Elsevier; 2012:chap 14.