Severe Mastitis Symptoms: When to Seek Care

Mastitis is inflammation of breast tissue, often during breastfeeding, when milk flow is disrupted or bacteria enter through damaged skin. One area may become hard, tender, hot, or wedge-shaped, while the whole body feels flu-like. Symptoms can progress to a collection of pus, called an abscess, which may need drainage. A breast symptom can have several causes, so severe mastitis symptoms do not by themselves establish the cause.

Contact a clinician promptly and explain when symptoms started, whether you are breastfeeding, and whether you have fever or a new lump. Rest, drink fluids, and use a cool pack wrapped in cloth for short periods. Wear a supportive bra and feed or express only as needed for comfort; avoid forceful massage or trying to empty the breast aggressively. A clinician may recommend treatment after examining you. A [Lactation Consultation](/treatments/pregnancy-and-birth-care/lactation-consultation/) can help with positioning and milk removal.

Seek same-day medical advice for worsening redness, severe pain, a persistent hard area, fever, or symptoms that do not settle. Go to urgent care for confusion, fainting, fast breathing, inability to keep fluids down, rapidly spreading redness, or skin that becomes purple, grey, or black. [Breast Pain](/symptoms/breast-pain/) and [Painful Breastfeeding](/symptoms/painful-breastfeeding/) may help you describe related symptoms, but severe or rapidly changing symptoms need direct assessment.

Could this be an abscess or another breast problem? Do I need antibiotics, an ultrasound, or a review if symptoms continue? How can I maintain feeding safely while the breast heals?