Hello,
Hard, painful lump could result from an injury, infection, cyst or
fibrocystic change. If you had previous
breast injuries, fat cells in the
breast tissue may be damaged and produce a firm, painful lump in the breast. If lumps are accompanied by breast tenderness and redness, it may suggest an infection. Similarly, breast cysts can also produce firm, tender lumps in the breast that change in size and seem to appear and disappear as your monthly hormone levels change.