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A breast infection is an infection in the tissue of the breast.
Mastitis; Infection - breast tissue; Breast abscess
Breast infections are usually caused by a common bacteria (Staphylococcus aureus) found on normal skin. The bacteria enter through a break or crack in the skin, usually on the nipple.
The infection takes place in the fatty tissue of the breast and causes swelling. This swelling pushes on the milk ducts. The result is pain and lumps in the infected breast.
Breast infections usually occur in women who are breastfeeding. Breast infections that are not related to breastfeeding might be a rare form of breast cancer.
Breastfeeding women are usually not tested. However, an exam is often helpful to confirm the diagnosis and rule out complications such as an abscess.
Self-care may include applying moist heat to the infected breast tissue for 15 to 20 minutes four times a day.
Antibiotic medications are usually very effective in treating a breast infection. You are encouraged to continue to breastfeed or to pump to relieve breast engorgement from milk production while receiving treatment.
The condition usually clears quickly with antibiotic therapy.
In severe infections, an abscess may develop. Abscesses need to be drained, either as an office procedure or with surgery. Women with abscesses may be told to temporarily stop breastfeeding.
Call your health care provider if:
The following may help reduce the risk of breast infections:
Newton ER. Breast-feeding. In: Gabbe SG, Niebyl JF, Simpson JL, eds. Obstetrics: Normal and Problem Pregnancies. 5th ed. Philadelphia, PA: Churchill Livingston Elsevier; 2007:chap 22.
Grobmyer SR, Massoll N, Copeland EM III. Clinical management of mastitis and breast abscess and idiopathic granulomatous mastitis. In: Bland KI, Copeland EM III, eds. The Breast: Comprehensive Management of Benign and Malignant Disorders. 4th ed. Philadelphia, Pa: Saunders Elsevier; 2009:chap 6.