Breast cancer: 4 early signs every woman should know.

Breast changes are often harmless, but some signs need attention.

A lump or swelling in the armpit is one key warning—especially if it doesn’t go away.

Watch for changes in the breast, like pain, size or shape changes, skin dimpling, redness, or unusual nipple discharge.

These signs don’t always mean cancer, but they should be checked.

Regular self-checks help you notice changes early. From age 40, mammograms are important.

If something feels unusual, see a doctor—early detection can save lives.