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Cancer · Cancer (General)
Triple-Negative Breast Cancer
Last reviewed: October 2026
An aggressive type of breast cancer. US research has found higher rates of triple-negative breast cancer in Black women, including women under 45, who were also more often diagnosed at a later stage.
Warning Signs
- A new lump in the breast or armpit
- Any change in breast size or shape
- Dimpling or irritation of the skin
- Nipple discharge other than breast milk
Prevention Tips
- Know what's normal for your breasts and report changes
- Ask your doctor when to start mammograms
- Know your family history
Where to get checked or find care for triple-negative breast cancer in your country.
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Medical disclaimer: This information is for education and community awareness only. It is not medical advice, diagnosis or treatment. Always talk to a qualified healthcare provider about your health, and call emergency services if you think someone needs urgent help.