When mastitis antibiotics are not working

Breast inflammation can be related to milk stasis, tissue injury or infection, and antibiotics do not treat every cause of breast pain or swelling. The medicine may not match the organism, the infection may need a different route or duration, or an abscess may have formed. A clinician may examine the breast and consider imaging or a sample when symptoms do not settle.

Persistent redness or swelling does not by itself identify the cause. A review can also distinguish mastitis from other breast conditions and check whether a medicine is causing an adverse reaction.

Contact the prescriber promptly and explain when treatment began, whether symptoms changed, and whether you have taken every dose. Do not double doses, share antibiotics or switch to leftover medicine. Continue feeding or expressing if this is comfortable and advised, use gentle handling, rest, drink to thirst, and ask which pain relief is appropriate for you and your baby.

A clinician may change the medicine, investigate another cause or arrange drainage if a collection is suspected. Keep the breast clean and avoid forceful massage or pressure that increases pain. Bring the medicine packet and mention allergies, pregnancy, breastfeeding and other medicines.

Seek same-day medical care if feverishness, worsening pain, spreading redness, increasing swelling or marked weakness continues despite treatment. Urgent assessment is especially important if you feel faint, confused, dehydrated or unable to keep fluids down. Go to emergency care for severe illness, breathing difficulty or collapse. A tender, soft or fluctuant area may need prompt assessment for a collection.

Ask: Does this still look like infectious mastitis? Could there be an abscess or another breast problem? Do I need an examination, imaging or a sample? Should the antibiotic change, and how should I manage feeding or expressing? Which symptoms mean I should return urgently?