Medical Definition of Menstruation

Our Menstruation Main Article provides a comprehensive look at the who, what, when and how of Menstruation

Menstruation: The periodic blood that flows as a discharge from the uterus. Also called menorrhea, the time during which menstruation occurs is referred to as menses. The menses occurs at approximately 4 week intervals to compose the menstrual cycle.

Quick GuidePremenstrual Syndrome (PMS): Track and Prevent Symptoms

Premenstrual Syndrome (PMS): Track and Prevent Symptoms

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Last Editorial Review: 5/13/2016

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