Mild mastitis: what to know

Mastitis can happen when milk is not draining comfortably and breast tissue becomes inflamed. It may affect one area or much of a breast, with redness, warmth, swelling, a firm patch, or pain. Fever, chills, fatigue, and body aches can occur. A blocked-feeling area is not a reason to stop breastfeeding suddenly; abrupt changes can worsen fullness. Cracked nipples, shallow attachment, pressure from a tight bra, or long gaps between feeds may contribute, but a clinician should assess persistent symptoms.

Continue breastfeeding or expressing in a way that feels comfortable, beginning with the affected side only if advised and tolerable. Use a cool pack wrapped in cloth after feeds, rest, drink to thirst, and wear a supportive bra that does not press on the breast. Avoid forceful massage, aggressive pumping, or trying to empty the breast completely. A lactation consultant can check attachment and positioning. Your clinician may recommend pain relief or antibiotics when bacterial infection is suspected.

Contact a clinician promptly if symptoms are severe, rapidly worsening, or not starting to improve, or if a fever or flu-like illness continues. Seek urgent care for confusion, fainting, severe weakness, spreading redness with marked swelling, or difficulty keeping fluids down. A persistent lump, recurrent inflammation, or drainage from the nipple needs examination even if pain settles.

Ask whether this looks like inflammation or infection, how to adjust feeding or expressing, which pain medicines are compatible with breastfeeding, when antibiotics are needed, and when a persistent lump should be rechecked.