Blocked breast milk duct

The problem is often inflammation and narrowing around milk ducts rather than a solid plug that must be forced out. Deep massage and repeated extra pumping can worsen swelling and breast injury.

You may notice a sore, firm or wedge-shaped area, sometimes with mild redness and reduced milk flow from that part of the breast. Breastfeeding can feel uncomfortable, but milk remains safe for the baby. Pressure from tight clothing, changes in feeding rhythm, oversupply or ineffective milk transfer may contribute.

Widespread redness, increasing heat, fever or flu-like illness can occur with mastitis rather than a simple localised narrowing. A persistent lump may have another cause and needs examination instead of repeated home treatment.

Continue breastfeeding responsively if you can, using the affected breast normally rather than trying to empty it repeatedly. Check that positioning and attachment are comfortable. If feeding is too painful, express only enough milk for comfort and to meet your baby's needs.

Apply a cool pack wrapped in cloth after feeds, rest, drink to thirst and wear a supportive bra that does not press on the sore area. Very light skin-level sweeping toward the armpit may ease swelling; avoid forceful kneading, vibrating devices and squeezing the nipple. Ask a pharmacist or clinician whether an anti-inflammatory pain medicine is suitable for you, especially if you have allergies, stomach, kidney or bleeding problems.

Contact a clinician promptly if you develop fever, chills, flu-like symptoms, spreading redness, worsening pain, pus or feel significantly unwell. Also seek review if the tender area is not improving, keeps returning, or a lump remains after the breastfeeding symptoms settle. Treatment may be needed for bacterial mastitis or an abscess.

Seek urgent help if you are faint, confused, short of breath, unable to keep fluids down or rapidly becoming more unwell. A baby who is unusually sleepy, has fewer wet nappies or is feeding poorly also needs prompt assessment.

Ask whether attachment, pumping settings, oversupply or pressure on the breast is contributing. A lactation professional can observe a feed and help build a plan that protects milk supply without overstimulating production. Tell the clinician about fever, nipple damage, medicines, previous mastitis and how the breast has changed.