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mastitis (breast inflammation)

mastitis is an inflammation of the breast that occurs most commonly in breastfeeding women; it can be related to tissue injury, infection, or both. breastfeeding mastitis is typically caused by bacteria that enter the breast through a cracked or sore nipple.

signs of infection may include:

  • increased pain, swelling, redness, or warmth in an area on a breast.
  • red streaks extending from a breast.
  • drainage of pus coming from a breast.
  • swollen lymph nodes in the neck or armpit.
  • flu-like symptoms, such as fever of 38.3 °c (101 °f) or higher, chills, and fatigue.

treatment usually involves antibiotic medicines, keeping up milk flow, and measures to relieve discomfort. while they are being treated, most women can safely continue to breastfeed or pump breast milk.

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this information does not replace the advice of a doctor. healthwise, incorporated, disclaims any warranty or liability for your use of this information. your use of this information means that you agree to the terms of use and privacy policy. to learn more about healthwise, visit healthwise.org. © 1995-2022 healthwise, incorporated. healthwise, healthwise for every health decision, and the healthwise logo are trademarks of healthwise, incorporated.

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