A breast infection is an infection in the tissue of the breast.
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 breast-feeding. Breast infections that are not related to breast-feeding might be a rare form of breast cancer.
Breast-feeding women are usually not tested. However, an exam is often helpful to confirm the diagnosis and rule out complications such as an abscess.
Sometimes for infections that keep returning, milk from the nipple will be cultured. In women who are not breast-feeding, testing may include mammography or breast biopsy.
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.
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 breast-feeding.
Call your health care provider if:
The following may help reduce the risk of breast infections:
Mastitis; Infection - breast tissue; Breast abscess