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Breast infectionDefinition: A breast infection is an infection in the tissue of the breast.
Alternative Names: Mastitis; Infection - breast tissue; Breast abscess
Causes, incidence, and risk factors: Breast infections are usually caused by a common bacteria found on normal skin (Staphylococcus aureus). The bacteria enter through a break or crack in the skin, usually the nipple. The infection takes place in the parenchymal (fatty) tissue of the breast and causes swelling. This swelling pushes on the milk ducts. The result is pain and swelling of the infected breast. Breast infections usually occur in women who are breast-feeding. Breast infections that are not related to breast-feeding must be distinguished from a rare form of breast cancer .
Signs and tests: In women who are not breast-feeding, testing may include mammography or breast biopsy . Otherwise, tests are usually not necessary.
Treatment: 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 breast-feed or to pump to relieve breast engorgement (from milk production) while receiving treatment.
Expectations (prognosis): The condition usually clears quickly with antibiotic therapy.
Complications: In severe infections, an abscess may develop. Abscesses require more extensive treatment, including surgery to drain the area. Women with abscesses may be told to temporarily stop breast-feeding.
Calling your health care provider: Call your health care provider if any portion of the breast tissue becomes reddened, tender, swollen, or hot, or if the lymph nodes in the armpit become tender or swollen.
Prevention: Good breast care, especially after delivery and while breast-feeding, may reduce the risk of breast infections.
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| Review Date: 5/10/2006
Reviewed By: Melanie N. Smith, M.D., Ph.D., Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Boston, MA. Review provided by VeriMed Healthcare Network.
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