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Blocked milk ducts

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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.

Current as of: April 30, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

Current as of: April 30, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

The Health Encyclopedia contains general health information. Not all treatments or services described are covered benefits for Kaiser Permanente members or offered as services by Kaiser Permanente. For a list of covered benefits, please refer to your Evidence of Coverage or Summary Plan Description. For recommended treatments, please consult with your health care provider.