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.

Mastitis References

  1. Spencer JP. Management of mastitis in breastfeeding women. Am Fam Physician. 2008 Sep;78(6):727-732. PMID: 18819238
  2. Cusack L. Lactational mastitis and breast abscess-diagnosis and management in general practice. Aust Fam Physician. 2011 Dec;40(12):976-979. PMID: 22146325
  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
  4. Katz VL, Dotter D. Breast diseases: diagnosis and treatment of benign and malignant disease. In: Katz VL, Lentz GM, Lobo RA, Gerhenson DM. Comprehensive Gynecology. 6th. Philadelphia: Mosby, Elsevier; 2012.
  5. Newton ER. Lactation and breastfeeding. In: Gabbe SG, Niebyl JR, Simpson JL, eds. Obstetrics normal and problem pregnancies. 6th. Philadelphia: Saunders, Elsevier; 2012.
  6. MedWorm
  7. Guidelines and Adult Implementation Network Guidelines on the treatment, management and prevention of mastitis. Aug 2009
  8. Royal Women’s Hospital clinical practice guidelines. Mastitis and breast abscess. 2012. Accessed 19 Apr 2013.
  9. Dixon JM. Lactational mastitis. UpToDate. 12 Jun 2018. Accessed 19 Jun 2014.
  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
  13. Spencer J. Common problems of breastfeeding and weaning. UpToDate. 17 Jul 2018.
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