What should you know about constant mastitis?

Mastitis can cause a tender, warm, swollen, or reddened area of the breast, sometimes with fever, chills, or fatigue. It is common during breastfeeding, when milk flow is disrupted, but inflammation can also occur outside breastfeeding. A persistent lump, worsening redness, or symptoms that do not settle should not be self-diagnosed as mastitis.

A clinician may check the breast and armpit, ask about feeding, pumping, nipple injury, medicines, and previous episodes, and decide whether imaging or other tests are needed.

Continue gentle breastfeeding or expressing if you are feeding, unless a clinician advises otherwise. Avoid forceful massage and excessive pumping, which can further irritate tissue. Supportive clothing, rest, fluids, and a cool pack may ease discomfort. Use pain relief only if it is suitable for you and follow the product instructions.

Arrange review when symptoms persist, recur, or include a firm area that does not improve. A lactation consultation can help identify latch, positioning, or milk-removal problems when breastfeeding is involved. Take prescribed antibiotics exactly as directed and contact the prescriber if you are not improving.

Seek same-day medical advice for fever, rapidly spreading redness, severe pain, marked swelling, pus, or feeling acutely unwell. Seek prompt review for a persistent lump, skin dimpling, nipple inversion, bloody discharge, or symptoms that continue despite treatment. Urgent assessment is needed if you feel faint, confused, or severely weak.

Does this look like inflammatory or infectious mastitis? Could a blocked duct, abscess, medication, or another breast problem be involved? Do I need imaging? Is breastfeeding or expressing safe for me, and would lactation support help?