Department of Obstetrics and Gynecology

Gynecologic Oncology Program

Breast Care Program

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Mastitis

Mastitis is an infection in the breast. It is usually found in women who are breast-feeding. During nursing, normal germs from the skin enter the breast. If the breast is not emptied well, or a breast duct is clogged, the germs are likely to grow.

The symptoms of mastitis include:

• fever

• pain

• redness and sometimes

• a lump in the breast

If not treated, a pocket of infection, called an abscess, can form. This may need to be drained for complete relief.

If you are breast-feeding and think mastitis is starting, make sure your breasts are emptied with each feeding. Using a breast pump or manually expressing your milk can be done when needed to make sure of this. Empty a small amount of milk between feedings to relieve pain. Mastitis can start when the baby first sleeps through the night.

If you are feeling sick, or the pain or redness does not improve in 24 hours, call your healthcare provider. You may continue to feed from the breast but may need an antibiotic for complete treatment. Make sure to wash your hands and breasts with a mild soap and water before and after each feeding. This will help prevent another infection.

If you are not breast-feeding and think mastitis is starting, call your healthcare provider. The treatment will depend on the situation, but usually an antibiotic will be all that is needed.

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