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What is mastitis?
Mastitis is inflammation of the breast, and it is most common in people who are breastfeeding. It can affect one breast or, more rarely, both breasts. It may come on quickly and can feel very uncomfortable.
In many cases, mastitis is linked to a blocked milk duct or milk not draining well. It can also happen if germs get into the breast through a cracked nipple. Some people develop a breast infection alongside the inflammation.
Common symptoms
The breast may feel hot, swollen, tender, or painful. A red area may appear, often in a wedge shape. The skin can sometimes look shiny or tight.
Some people also feel unwell, with flu-like symptoms such as a fever, chills, or aches. Feeding may become painful, and the affected breast may feel heavier than usual. If the symptoms are severe or getting worse, medical advice should be sought.
Causes and risk factors
Mastitis often develops when milk builds up in the breast. This can happen if feeds are missed, the baby is not latching well, or the breasts are not fully emptied. Pressure on the breast from tight clothing or bras can also contribute.
Cracked nipples, tiredness, stress, and previous episodes of mastitis may raise the risk. It can happen at any stage of breastfeeding, though it is more common in the early weeks. People who have recently changed feeding patterns may also be more vulnerable.
Self-care and treatment
Keeping milk moving is usually helpful. Feeding or expressing milk regularly can ease the blockage and reduce discomfort. Gentle massage towards the nipple while feeding may also help.
Rest, fluids, and pain relief such as paracetamol or ibuprofen may be useful if suitable for you. A warm compress before feeds and a cool compress afterwards can help with pain and swelling. If symptoms do not improve, a GP or midwife may suggest antibiotics.
When to get medical help
Seek advice from a GP, midwife, health visitor, or NHS 111 if you think you have mastitis and it is not improving. You should get help sooner if you have a high fever, feel very unwell, or the breast becomes increasingly red and painful.
It is also important to check for a breast abscess, which may need different treatment. If a lump remains after symptoms settle, or if you are not breastfeeding and develop breast changes, it is best to have it assessed. Early treatment can help prevent complications.
Looking after breasts while breastfeeding
Good latch and regular feeding can help reduce the chance of mastitis. Avoid skipping feeds for long periods if possible, and try to vary feeding positions. Make sure bras and clothing do not press too tightly on the breasts.
If nipples are sore or cracked, getting support early may prevent problems from worsening. A breastfeeding adviser, midwife, or health visitor can help with technique and comfort. With the right care, mastitis often improves quickly and breastfeeding can continue.
Frequently Asked Questions
Mastitis in breast tissue is inflammation of the breast, most often caused by a blocked milk duct or a bacterial infection. It commonly occurs during breastfeeding but can happen in other situations as well.
Mastitis in breast tissue is usually caused by milk stasis, nipple trauma, cracked skin, or bacteria entering the breast tissue through the nipple. It can also be associated with weaning, engorgement, or immune changes.
Symptoms of mastitis in breast tissue can include breast pain, redness, warmth, swelling, a tender lump, fever, chills, and flu-like body aches. Some people also notice decreased milk flow from the affected breast.
Mastitis in breast tissue is usually diagnosed based on symptoms and a physical examination. In some cases, a clinician may order an ultrasound or other tests if an abscess or another condition is suspected.
Mastitis in breast tissue is commonly treated with continued milk removal, rest, hydration, pain relief, and sometimes antibiotics if a bacterial infection is likely. If an abscess forms, drainage may be needed.
Mastitis in breast tissue sometimes improves without antibiotics if it is due to inflammation rather than bacterial infection. However, if symptoms are severe, persistent, or accompanied by fever, medical evaluation is important because antibiotics may be needed.
Yes, breastfeeding is usually safe and often recommended with mastitis in breast tissue because emptying the breast can help recovery. In most cases, milk from the affected breast is still safe for the baby.
Mastitis in breast tissue can often be prevented by frequent breastfeeding or pumping, ensuring a good latch, avoiding prolonged engorgement, treating nipple cracks promptly, and addressing blocked ducts early.
Mastitis in breast tissue should be evaluated urgently if there is a high fever, rapidly worsening redness or swelling, severe pain, pus drainage, or signs of a breast abscess. Emergency care is also important if symptoms suggest sepsis or the person feels very unwell.
Yes, mastitis in breast tissue can lead to a breast abscess if infection becomes localized and forms a pocket of pus. An abscess often causes a painful, swollen lump that may not improve with standard treatment alone.
Mastitis in breast tissue involves inflammation and may include infection, fever, and widespread redness, while a blocked milk duct is usually a more localized area of tenderness or a lump without systemic symptoms. A blocked duct can sometimes progress to mastitis.
Yes, mastitis in breast tissue can occur without breastfeeding, although it is less common. Non-lactational mastitis may be linked to smoking, nipple piercing, skin conditions, hormonal changes, or bacterial infection.
Home care for mastitis in breast tissue often includes frequent breast emptying, warm compresses before feeding, cold packs after feeding, rest, fluids, and over-the-counter pain relievers if appropriate. Gentle massage and avoiding tight bras may also help.
Mastitis in breast tissue often improves within 24 to 48 hours after starting proper care, though some cases take longer. If symptoms are not improving or are worsening, medical assessment is needed.
Yes, mastitis in breast tissue can temporarily reduce milk supply because pain and inflammation may make it harder to feed or pump effectively. Supply often improves once the inflammation resolves and milk removal becomes more consistent.
Mastitis in breast tissue itself is not contagious. If bacteria are involved, basic hygiene such as handwashing and cleaning pumping equipment can help reduce the spread of germs.
Complications of mastitis in breast tissue can include breast abscess, recurrent infection, persistent pain, reduced milk supply, and in rare cases spread of infection. Prompt treatment lowers the risk of complications.
Recurrent mastitis in breast tissue is managed by addressing underlying causes such as poor latch, infrequent feeding, oversupply, nipple injury, or blocked ducts. A clinician may also check for abscess, resistant bacteria, or other breast conditions.
Yes, some symptoms of mastitis in breast tissue can overlap with inflammatory breast cancer or other serious conditions, especially if redness and swelling do not improve. Any persistent breast changes should be medically evaluated.
Mastitis in breast tissue should require follow-up care if symptoms do not improve within a couple of days, if the same area keeps recurring, or if a lump remains after treatment. Follow-up helps rule out abscess, resistant infection, or another diagnosis.
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