Nipple discharge, which can happen normally in certain cases for women, is always abnormal in men. Spontaneous nipple discharge is considered abnormal, as is nipple discharge from only one breast.
- Overview
- Possible Causes
- Care and Treatment
- When to Call the Doctor
- Overview
- Possible Causes
- Care and Treatment
- When to Call the Doctor
- Back To Top
Overview
What is nipple discharge?
Nipple discharge refers to fluid leaking from the nipple area of one or both breasts. It can happen in women who produce breast milk near the end of pregnancy and after giving birth. It can also occur normally in women who do not become pregnant or breastfeed.
In some cases, nipple discharge in women can be a symptom of an underlying medical condition. Nipple discharge is always abnormal in men. It is important to have a doctor determine the cause of any abnormal nipple discharge.
Possible Causes
What are the possible causes of nipple discharge?
Several conditions can cause a leaking breast. Causes of harmless discharge include:
- Hormone imbalances
- Medications, including birth control pills and some antidepressants
- Nipple stimulation or friction from clothing
- Pregnancy or breastfeeding
- Sexual arousal
- Stress
Doctors consider nipple discharge abnormal when it occurs spontaneously [not caused by breast stimulation], is bloody, or only occurs in one breast. Conditions that may cause abnormal nipple discharge include:
- Papilloma [noncancerous breast tumor]
- Mammary duct ectasia [milk duct that dilates and fills with fluid]
- Breast infection or abscess
- Cancerous breast tumor [in rare cases]
Care and Treatment
How is nipple discharge diagnosed?
Doctors diagnose nipple discharge with a medical history and physical exam. Tests doctors use to identify the cause of the discharge include:
- Imaging: Tests including mammography [breast X-ray] , ultrasound and MRI and can help reveal a cause
- Biopsy: If the physical exam or imaging tests show an abnormality, a doctor takes a sample of breast tissue
- Blood tests: A doctor takes a blood sample to measure hormone levels
How is nipple discharge managed or treated?
Treatment for nipple discharge depends on the cause. Your treatment may involve:
- Changing or stopping a medication
- Removing a lump or cyst
- Taking out a milk duct
- Treating another underlying disorder
When to Call the Doctor
When should I call the doctor about nipple discharge?
Contact your doctor about any nipple discharge that is new, nipple discharge that lasts longer than a single menstrual cycle or:
- Accompanies a lump
- Comes from one breast only
- Develops in a man or boy
- Happens without breast stimulation
- Is pink or bloody
- Occurs in women over age 40
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Nipple discharge refers to any fluid that seeps out of the nipple of the breast.
Nipple discharge during pregnancy and breast-feeding is normal. Nipple discharge happens less commonly in women who aren't pregnant or breast-feeding. It may not be cause for concern, but it's wise to have it evaluated by a doctor to be sure. Men who experience nipple discharge under any circumstances should be evaluated.
One or both breasts may produce a nipple discharge, either spontaneously or when you squeeze your nipples or breasts. Nipple discharge may look milky, clear, yellow, green, brown or bloody. Discharge that isn't milk comes out of your nipple through the same ducts that carry milk. The discharge can involve a single duct or multiple ducts. The consistency of nipple discharge can vary — it may be thick and sticky or thin and watery.
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Dec. 04, 2021
- Understanding breast changes: A health guide for women. National Cancer Institute. //www.cancer.gov/publications/patient-education/understanding-breast-changes. Accessed Oct. 10, 2019.
- Golshan M. Nipple discharge. //www.uptodate.com/contents/search. Accessed Oct. 10, 2019.
- Lee SJ, et al. ACR Appropriateness Criteria evaluation of nipple discharge. Journal of the American College of Radiology. 2017;14:S138.
- Nipple discharge. Merck Manual Professional Version. //www.merckmanuals.com/professional/gynecology-and-obstetrics/breast-disorders/nipple-discharge. Accessed Oct. 10, 2019.
- AskMayoExpert. Nipple discharge. Mayo Clinic; 2019.
- Pruthi S [expert opinion]. Mayo Clinic. Oct. 10, 2019.
- American College of Obstetricians and Gynecologists. Practice Bulletin No. 164: Diagnosis and management of benign breast disorders. Obstetrics & Gynecology. 2016; doi:10.1097/AOG.0000000000001482.
- Galactorrhea. Merck Manual Professional Version. //www.merckmanuals.com/professional/endocrine-and-metabolic-disorders/pituitary-disorders/galactorrhea#v980911. Accessed Oct. 9, 2019.
- Paget disease of the breast. National Cancer Institute. //www.cancer.gov/types/breast/paget-breast-fact-sheet. Accessed Oct. 10, 2019.
- Dixon JM. Nonlactational mastitis. //www.uptodate.com/contents/search. Accessed Oct. 10, 2019.
See also
- Amenorrhea
- Breast cancer
- Breast Cancer
- Breast cancer chemoprevention
- Breast Cancer Education Tool
- Common questions about breast cancer treatment
- Breast cancer radiation: Can it cause dry skin?
- Infographic: Breast Cancer Risk
- Breast cancer staging
- Breast cancer types
- Infographic: Breast Reconstruction Options
- Dragon Boats and Breast Cancer
- Ductal carcinoma in situ [DCIS]
- Fibrocystic breasts
- Galactorrhea
- Genetic Testing for Breast Cancer
- Genetic testing for breast cancer: Psychological and social impact
- Male breast cancer
- Mammary duct ectasia
- What is breast cancer? An expert explains
- Paget's disease of the breast
- Paulas story A team approach to battling breast cancer
- Pink Sisters
- The Long Race Beating Cancer
- Weight Loss After Breast Cancer
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