Skip to content

    Health & Baby

    Font Size
    A
    A
    A

    Breast Lumps in Your Newborn Baby

    It's normal for babies (boys and girls) to have mild or even swollen, enlarged breasts and/or lumps under the nipple. They are almost always benign and due to exposure to maternal hormones in the womb. The same hormones that cause the mother's breasts to swell and milk glands to be stimulated can do the same to the baby's breasts.

    These lumps and enlarged breasts in the baby may be quite noticeable at birth. They might even continue to grow after birth for a while. If you were to pinch them, some real breast milk may be expressed.

    Over weeks, or sometimes even months, when there is no more exposure to the hormones, the breast tissue begins to shrink and eventually becomes quite flat. Occasionally a normal, small amount of tissue remains, but it doesn't grow or cause discomfort.

    Tips for Concerned Parents

    Sometimes, overly worried parents touch and pinch the breasts so much that the area gets irritated. Leave them alone and let nature take its course in shrinking them.

    When to Worry About Swollen Breasts or Lumps

    In the rare case when the breasts look infected (swollen, red, tender, or have a discharge) and the baby has a fever, call your pediatric provider to check if an infection has set in.

    WebMD Medical Reference

    Reviewed by Roy Benaroch, MD on June 07, 2015

    Today on WebMD

    mother on phone holding baby
    When you should call 911.
    parents and baby
    Unexpected ways your life will change.
     
    baby acne
    What’s normal – and what’s not.
    baby asleep on moms shoulder
    Help your baby get the sleep he needs.
     

    mother holding baby at night
    ARTICLE
    mother with sick child
    QUIZ
     
    Chinese mother breast feeding newborn baby girl
    SLIDESHOW
    Track Your Babys Vaccines
    TOOL
     
    Baby Napping 10 Dos And Donts
    Slideshow
    Mother with her baby boy
    Article
     
    baby in crib
    Slideshow
    baby gear slideshow
    Slideshow