Breast lump

Updated: 2018-05-25


For a lump caused by infection (mastitis), continue breastfeeding, but vary feeding positions. Extra fluids and rest also may help.

When to seek immediate medical care

See a doctor immediately if:

  • Fever or chills
  • Breast tender, swollen, red, or warm to the touch
  • Pain or a burning sensation
  • Persistent or enlarging lump

When to make a doctor's appointment

Make an appointment to see a doctor if:

  • Firm, fixed, or different from other breast tissue
  • Persists beyond four to six weeks
  • Nipple discharge or skin changes, such as redness, crusting, dimpling, or puckering
  • Nipple is turned inward and isn't normally positioned that way
  • Enlarging lumps in the armpit
  • Persistent thickening of breast