- Lumps or Thickening: Any unusual lumps or thickening in the breast or underarm area. - Changes in Size or Shape: Any noticeable changes in the size, shape, or symmetry of the breasts. - Skin Changes: Dimpling, puckering, or changes in the texture of the skin. - Nipple Discharge: Any unusual discharge from the nipples, especially if it is bloody or clear. - Pain: Persistent pain in one area of the breast.