What should you know about salty breast milk mastitis?

Mastitis is inflammation in breast tissue. During inflammation, milk from the affected side may taste saltier or different, and a baby may briefly refuse that side. Breast pain, warmth, swelling, a tender area or flu-like feelings can occur alongside the taste change. The salty taste itself does not establish the cause of every breast symptom.

A change in taste can also be related to milk sitting in a swollen area or to changes in feeding and milk removal. A lactation professional can watch a feed, check positioning and help distinguish breast inflammation from a latch or drainage problem.

Continue breastfeeding or expressing according to comfort and your usual pattern; abrupt, forceful emptying can aggravate swelling. Offer the less tender side first if that helps your baby feed, and use a comfortable position with a deep latch. Rest, drink to thirst and use prescribed or clinician-approved pain relief.

Avoid deep massage, tight clothing and repeated pumping to ‘empty’ the breast. Gentle hand expression may relieve pressure. If feeding remains painful or your baby refuses the affected side, arrange a lactation consultation for tailored support.

Contact a clinician promptly if you feel feverish or very unwell, redness is spreading, pain is worsening, or symptoms are not improving with supportive care. Seek urgent help for severe illness, confusion, breathing difficulty or dehydration. A persistent focal lump or discharge that is not milk also needs examination.

Ask whether your symptoms fit inflammatory mastitis, how to continue feeding safely, which pain relief is suitable for you and your baby, and when antibiotics or drainage should be considered. Ask for a feeding assessment if latch or milk removal is difficult.