Symptoms

Different people have different warning signs for breast cancer. Some people do not have any signs or symptoms at all. A person may find out they have breast cancer after a routine mammogram.
Some warning signs of breast cancer are—

New lump in the breast or underarm (armpit).
Thickening or swelling of part of the breast.
Irritation or dimpling of breast skin.
Redness or flaky skin in the nipple area or the breast.
Pulling in of the nipple or pain in the nipple area.
Nipple discharge other than breast milk, including blood.
Any change in the size or the shape of the breast.
Pain in any area of the breast.

Keep in mind that some of these warning signs can happen with other conditions that are not cancer.
If you have any signs that worry you, be sure to see your doctor right away.