Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Premenstrual syndrome (PMS)

Premenstrual syndrome (PMS) is a set of physical or mood-related symptoms that occur before your menstrual period each month. Symptoms begin about 1 to 2 weeks before your period starts. These symptoms go away in the first few days of your period. With PMS, these symptoms—like breast tenderness or irritability—are so bad that they interfere with your life.

Current as of: May 1, 2026

Author: WebMD Ignite Staff

Clinical Review Board
All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

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Ovarian Cysts: When to Watch and When to Worry

Hearing that you have an ovarian cyst can be unsettling, especially if it showed up during a routine exam and you never noticed a single symptom.

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