Mastitis usually only affects one breast and symptoms often develop quickly.


These symptoms include:


  • a red, swollen area on your breast that may feel hot and painful to touch

  • an area of hardness on your breast

  • a burning pain in your breast that may be continuous or may only occur when you are breastfeeding 

  • nipple discharge - which may be white or may contain streaks of blood

Over half of women with mastitis may also experience flu-like symptoms such as:


  • aches

  • high temperature (fever) of 38C (100.4F) or above

  • shivering and chills

  • tiredness

  • feeling generally unwell

Visit your GP immediately if you experience these symptoms, and you also have a red, tender area on your breast.


Mastitis is not usually a serious condition, but advice and prompt treatment may be needed to stop the condition getting worse.


Speaking to your GP or midwife will also help to reassure you.