Nipple Discharge: When to Be Seen
Nipple discharge is fluid that leaks from the nipple. It is common and usually benign, particularly when it comes from both breasts and multiple ducts. Discharge that is blood-stained, clear and watery, or comes from a single duct on one side is more likely to need specialist assessment.
What is nipple discharge?
Nipple discharge is any fluid that comes from the nipple outside of breastfeeding. The colour, whether it affects one or both breasts, and whether it comes from one duct or many, all help determine whether it needs investigation.
Common causes
- Hormonal changes — often milky discharge from both sides
- Duct ectasia — widening of milk ducts, common around the menopause
- Intraductal papilloma — a small benign growth in a duct, a common cause of blood-stained discharge
- Medications or a raised prolactin level
- Breast cancer — an uncommon cause, but the reason single-duct or bloody discharge is checked
How it is diagnosed
Mr Ghosh examines the breast and arranges imaging appropriate to your age. Where needed, the discharge is tested or a biopsy taken. The one-stop clinic combines these in a single appointment.
When to seek medical advice
See a doctor promptly — or call 999 if you feel acutely unwell — if you notice any of the following:
- Blood-stained discharge
- Clear, watery discharge from a single duct on one breast
- Discharge with a new lump
- Nipple skin changes, a rash or new inversion
- Discharge in a man
Most breast changes are not cancer. But any new or persistent change should be assessed. Our one-stop breast clinic offers same-day specialist assessment.
Frequently asked questions
What colour of discharge is concerning?
Discharge that is blood-stained or clear and watery, especially from a single duct on one breast, is more likely to need investigation. Milky or green-brown discharge from both breasts is usually benign.
Can hormones cause nipple discharge?
Yes. Hormonal changes, some medications, and pregnancy or breastfeeding commonly cause discharge. A raised prolactin level can also cause milky discharge.
How is it investigated?
Assessment includes examination, imaging (ultrasound and/or mammogram), and sometimes a sample of the discharge or a biopsy. Our one-stop clinic can do this in a single visit.
Related information
Sources
Worried about a breast symptom?
Book a same-day one-stop appointment with Mr Debashis Ghosh, or call our team in confidence.