Witch's milk
Milk secreted from the breasts of some newborn human infants of either sex / From Wikipedia, the free encyclopedia
Witch's milk or neonatal milk is milk secreted from the breasts of some newborn human infants of either sex.[1] Neonatal milk secretion is considered a normal physiological occurrence and no treatment or testing is necessary.[2] It is thought to be caused by a combination of the effects of maternal hormones before birth, prolactin, and growth hormone passed through breastfeeding and the postnatal pituitary and thyroid hormone surge in the infant.[2]
Breast milk production occurs in about 5% of newborns and can persist for two months though breast buds can persist into childhood. Witch's milk is more likely to be secreted by infants born at full term, and not by prematurely born infants.[2] The consistency of neonatal milk is estimated to be quite similar to maternal milk.[3] Its production also may be caused by certain medications.[4] In extremely rare cases neonatal mastitis may develop but it is unclear if it is related to neonatal milk secretion.[citation needed] Blood from the nipples is nearly always benign and frequently associated with duct ectasia; it should only be investigated when it is unilateral.[5]