Menu

Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Blocked milk ducts

Milk ducts in the breast may become blocked during breastfeeding when the breasts are full and not emptied regularly or thoroughly. Blocked milk ducts cause a lump that is sometimes tender and can become infected (mastitis).

Blocked milk ducts may be treated by:

  • Breastfeeding more often and in different positions, which helps drain milk from all parts of the breast.
  • Breastfeeding from the affected breast first, to move milk through the breast faster.
  • Applying moist heat to the area just before breastfeeding and hand-expressing or pumping a small amount of milk.
  • Massaging the area, always working toward the nipple, to increase the flow of milk before and during breastfeeding.