Mastitis

What it is

Mastitis is inflammation in your breast tissue, which can sometimes include an infection. It happens when a milk duct becomes clogged, or when bacteria enter the breast, often through a crack in the nipple. While it is most well known among breastfeeding women, it can happen at other times too.

How common it is

This is a fairly common condition for breastfeeding women, especially in the first few months after giving birth. It is much less common for women who are not breastfeeding.

What you may notice

You may notice a painful, swollen, or hard area in your breast that is warm and red. Some women also experience flu-like symptoms, such as a fever, chills, and body aches.

What can contribute

Mastitis is often caused by a blocked milk duct that doesn't clear or by delaying or missing feedings. Pressure on the breast from a tight bra or seatbelt can also contribute.

How it is usually checked

Your provider can usually identify mastitis with a physical exam of your breast. In some cases, they may want to test a sample of your milk or order a breast ultrasound to get a better look. Your provider may prescribe medication to help clear up the inflammation or infection.

Does this change my long-term risk?

Having an episode of mastitis does not change your long-term breast health risk. It's important to follow up with your provider to make sure the symptoms go away completely.

Comfort and everyday care

• Continue to breastfeed or pump regularly, making sure to empty the affected breast as much as possible.
• Apply warm, moist cloths to the sore area before feeding, and try cool packs between feedings for comfort.
• Get plenty of rest and drink lots of fluids to help your body fight the inflammation.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.