Lange Mammography Practice Exam 2026 – Complete Study Guide

Milky nipple discharge is not inherently worrisome. It’s often normal in the context of pregnancy or breastfeeding, and it can also occur with factors that raise prolactin levels such as certain medications, thyroid problems, or pituitary issues. What makes discharge concerning are red flags: if it’s spontaneous and unilateral, persistent when not postpartum or not breastfeeding, or accompanied by a lump, skin changes, or blood. In the absence of these red flags, milky discharge is often benign, though it may warrant clinical evaluation if it persists or if there are other concerning signs.