Nipple discharge in women who are not pregnant or breast-feeding may not be abnormal, but it's wise to have any unexpected nipple discharge evaluated by a doctor. Nipple discharge in men under any circumstances could be a problem and needs further evaluation. One or both breasts may produce a nipple discharge, either spontaneously or when you squeeze your nipples or breasts. A nipple discharge may look milky, or it may be clear, yellow, green, brown or bloody. Nonmilk discharge comes out of your nipple through the same nipple openings that carry milk. The consistency of nipple discharge can vary — it may be thick and sticky or thin and watery.
Please note: This information was current at the time of publication. But medical information is always changing, and some information given here may be out of date. For regularly updated information on a variety of health topics, please visit familydoctor. Sometimes a woman's breasts make milk even though she is not pregnant or breastfeeding. This condition is called galactorrhea say: guh-lack-tuh-ree-ah. The milk may come from one or both breasts.
Fluid that leaks from one or both nipples is called a nipple discharge. Each breast has several 15 to 20 milk ducts. A discharge can come from one or more of these ducts.
NCBI Bookshelf. Geneva: World Health Organization; Those discussed here include breast conditions and other breastfeeding difficulties, twins, a mother separated from her baby, a child with sickness, abnormality or a condition that interferes with suckling, and conditions of the mother.