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Premenstrual Syndrome (PMS)

What Is It?

Published: January, 2013

Premenstrual syndrome (PMS) is a collection of symptoms that many women experience during the one to two weeks before a menstrual period. These symptoms may be physical, psychological and emotional. They disappear soon after the start of menstrual bleeding.

Researchers are not certain what causes PMS. The most popular explanation is that PMS symptoms are related to cyclic changes in:

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Premenstrual Syndrome (PMS)

What Is It?

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Premenstrual Syndrome (PMS)

What Is It?

Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.

Related Articles

Related Topics