Mastitis — a painful breast infection affecting up to 20% of breastfeeding mothers — can make nursing feel agonizing. Understanding causes, effective home management, and when to seek medical care helps you navigate mastitis without necessarily stopping breastfeeding.
What Causes Mastitis?
Mastitis begins with milk stasis — milk not drained effectively from part of the breast. This results from a blocked duct, infrequent feeds, poor latch, sudden reduction in feeding frequency, pressure from a tight bra, or engorgement. When milk accumulates, bacteria (most commonly Staphylococcus aureus) from skin or the baby's mouth can enter through cracked nipples and cause infection. Early mastitis starts as blocked duct or non-infectious inflammation; if untreated, progresses to bacterial infection.
The Most Important Step: Keep Breastfeeding
Continue breastfeeding from the affected breast. This is the single most effective treatment. Emptying the breast relieves milk stasis, removes the medium where bacteria proliferate, and promotes recovery. Stopping breastfeeding worsens mastitis and significantly increases abscess risk. Your baby will not be harmed — bacteria in breast milk are neutralized by your baby's stomach acid.
Effective Home Remedies
Warm compress before feeding: Apply warmth for 5-10 minutes before nursing to encourage milk flow. Use warmth only before feeding, not continuously throughout the day. Gentle lymphatic massage: Use light circular movements from blocked area toward nipple during feeding — never aggressive deep tissue massage, which increases inflammation. Frequent feeding: Feed from the affected side every 1.5-2 hours and ensure complete drainage, pumping after if needed. Position baby's chin toward the blocked area for most effective drainage. Ibuprofen: Anti-inflammatory and pain-relieving, safe during breastfeeding at standard doses. Cold compress after feeding: Reduces inflammation and provides pain relief. The warm-before, cold-after protocol is widely recommended.
When You Need Antibiotics
Contact your doctor if symptoms do not improve within 12-24 hours of home management, or if you develop fever above 38.5°C, worsening symptoms, or a hardening lump. Antibiotics (typically flucloxacillin or cephalexin, both breastfeeding-safe) are very effective when started promptly. Complete the full course to prevent recurrence.
Preventing Mastitis Recurrence
After recovery, address underlying causes: improve your baby's latch with a lactation consultant, avoid engorgement by feeding on demand, avoid tight bras, and treat cracked nipples promptly with lanolin. Mothers who have had mastitis once are at higher risk of recurrence, but preventive measures significantly reduce this risk.