Which breast changes may be signs of cancer and need assessment?
Important changes include a new breast or armpit lump, a newly inverted nipple, unusual discharge, or altered skin or shape. Many have non-cancerous causes, but need assessment. Lack of pain or a previous normal mammogram is not a reason to ignore a change.
Details
Do not wait for a painful lump
Symptoms may be painless. Skin changes can include dimpling, an orange-peel appearance or persistent redness. Notice new changes from your usual pattern rather than assuming every difference between breasts is abnormal.
How is the cause established?
Assessment begins with history and examination, followed by suitable imaging and sometimes biopsy. Size or softness alone cannot determine what a lump is. Trying creams or home remedies should not delay investigation of a persistent change.
How promptly should you seek care?
Arrange an appointment soon for a new lump or unusual change. A painful red breast with fever or feeling unwell may reflect infection and needs prompt assessment. Men can also develop breast cancer, so new breast changes in men deserve evaluation too.
Related reading: How should I notice breast changes, and can self-checks replace mammograms?.