Mastitis

Mastitis is painful inflammation in your breast tissue that can lead to a bacterial infection.

Anyone can get mastitis. It’s most common in women and people assigned female at birth (AFAB) who breastfeed (chest feed). Men and people assigned male at birth (AMAB) and people who don’t breastfeed can also get it, but this is rare.

How common is mastitis?

Mastitis affects up to 10% of breastfeeding people in the United States. It may affect up to 30% of breastfeeding people worldwide. It’s most common in the first three months of breastfeeding.