While in the womb, a baby is exposed to many chemicals (hormones) present in the mother's blood stream. After birth, the infants are no longer exposed to these hormones. This may cause temporary conditions in a newborn.
Alternative NamesNewborn breast swelling; Physiologic leukorrhea
InformationHormones from the mother (maternal hormones) are some of the chemicals that pass through the placenta during pregnancy. They affect the baby.
For example, during pregnancy high levels of the hormone estrogen are produced. This causes breast enlargement in the mother. It can have a similar affect in newborn boys and girls by the third day after birth. Such newborn breast swelling is temporary, but is a common concern among new parents. The breast swelling should go away by the second week after birth as the hormones leaves from the newborn's body. Do not squeeze or massage the newborn's breasts because this can cause an infection under the skin (abscess).
Maternal hormones may also cause some fluid to leak from the infant's nipples. This is called witch's milk. It is common and usually goes away within 2 weeks.
Newborn girls may also have temporary changes in the vaginal area.
These changes are common and should slowly go away over the first 2 months of life.
Hormonal effects in newborns occur because, while they are in the womb, babies are exposed to many chemicals (hormones) present 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.
Alternative NamesNewborn breast swelling; Physiologic leukorrhea
InformationHormones from the mother (maternal hormones) are some of the chemicals that pass through the placenta into the baby's blood during pregnancy. These hormones can affect the baby.
For example, during pregnancy, high levels of the hormone estrogen are produced. This causes breast enlargement in the mother. By the third day after birth, breast swelling may also be seen in newborn boys and girls. Such newborn breast swelling does not last, but it is a common concern among new parents.
The breast swelling should go away by the second week after birth as the hormones leave the newborn's body. Do not squeeze or massage the newborn's breasts because this can cause an infection under the skin (abscess).
Hormones from the mother may also cause some fluid to leak from the infant's nipples. This is called witch's milk. It is common and usually goes away within 2 weeks.
Newborn girls may also have temporary changes in the vaginal area.
These changes are common and should slowly go away over the first 2 months of life.
Reviewed ByReview Date: 01/24/2011
Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
newborns
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Abstinence is the birth control with the fewest side effects. After that, probably condoms. When it comes to brands of hormonal birth control, the side effects differ from person to person. There's no one brand that is best for everyone.
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Newborns, two to three weeks.