Engorged breasts are breasts that have become overly full, hard, tight, and painful due to an accumulation of milk and increased blood and fluid, commonly occurring in the early postnatal period.
Breast engorgement occurs when the breasts become overly full, causing them to feel hard, tight, and painful. The NHS describes it as a condition where "your breasts become overly full" and notes they "may feel hard, tight and painful". La Leche League GB explains that engorgement involves tissue swelling beyond just milk storage: "Your body directs extra blood and fluids to your breasts to boost milk production", meaning the breasts can feel "heavy, hard, warm and sensitive — as if they are ready to burst". Engorgement commonly arises in the early postnatal period as milk production is established, and can recur whenever feeding frequency decreases.
What causes breast engorgement?
La Leche League GB identifies several causes of engorgement. In the early postnatal period, changing hormone levels cause the breasts to swell and enlarge. Additional fluid given intravenously during labour (for example to maintain blood pressure) can also contribute. Engorgement can also be caused or worsened by missed or delayed feeds, feeding to a schedule rather than responsively, producing significantly more milk than the baby needs (oversupply), a baby who is unable to nurse effectively, or rapid weaning. The NHS also notes that poor attachment at the breast can result in the nipple becoming overstretched and flattened, compounding discomfort.
How is breast engorgement managed?
NHS guidance recommends feeding the baby frequently and expressing a small amount of breast milk by hand for comfort. La Leche League GB advises breastfeeding at least 8–12 times in 24 hours and ensuring a good latch. Cold compresses or ice applied for 15–20 minutes between feeds can reduce swelling, and non-steroidal anti-inflammatory pain relief such as ibuprofen may be used. The NHS advises mothers to wear well-fitting bras and to seek support from a midwife, health visitor, or breastfeeding specialist if engorgement is not resolving, as persistent engorgement can lead to blocked ducts or mastitis.
Engorgement and sore nipples in the first weeks are common — but you don't have to white-knuckle through them. What helps, and when to call someone.
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