Mastitis is the inflammation of the breast that may or may not be associated with bacterial infection.
Staphylococcus aureus is the most common organism associated with mastitis.
It may occur spontaneously or during lactation. It most frequently occurs during the first 6-8 weeks postpartum, although it may occur any time during breastfeeding.
Nonpuerperal mastitis is most commonly associated with breast cyst.
Breast abscess (collection of pus in the breast) is a complication of mastitis.
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  3. The Academy of Breasfeeding Medicine Protocol Committee. ABM clinical protocol #4: mastitis. Breastfeed Med. 2008 Sep;3(3):177-180. doi: 10.1089/bfm.2008.9993. PMID: 18778213
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  10. Mangesi L, Dowswell T. Treatments for breast engorgement during lactation. Cochrane Database Syst Rev. 2010 Sep(9):CD006946. doi: 10.1002/14651858.CD006946.pub2. PMID: 20824853
  11. Amir LH; Academy of Breastfeeding Medicine Protocol Committee. ABM clinical protocol #4: Mastitis, revised March 2014. Breastfeed Med. 2014 Jun;9(5):239-243. doi: 10.1089/bfm.2014.9984. PMID: 24911394
  12. Say B, Dizdar EA, Degirmencioglu H, et al. The effect of lactational mastitis on the macronutrient content of breast milk. Early Human Development. 2016 Jun 22;98:7-9. doi: 10.1016/j.earlhumdev.2016.03.009. Accessed 25 May 2017. PMID: 27341630
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