Premenstrual Syndrome
Condition
(PMS; Premenstrual Tension Syndrome)
Definition
Premenstrual syndrome (PMS) is a group of physical and emotional symptoms that happen 1 to 2 weeks before the start of a woman's period.
Copyright © 2002 Nucleus Communications, Inc. All rights reserved.

Causes
The exact cause of PMS is not known. Hormone changes happen in women around their period. Overall health, daily habits, and other factors may make some people more sensitive to these changes.
Risk Factors
PMS is more common in women who are 25 to 40 years of age. Other things that may raise the risk are:
- Stopping birth control pills
- Major life stress
- Depression
Symptoms
PMS may cause:
- Irritability
- Mood swings
- Anxiety or depression
- Low self-esteem
- Problems with focus
- Sleep problems
- Changes to eating habits, such as sugar and/or salt cravings or overeating
- Weight gain
- Tiredness
- Bloating
- Headache
- Breast swelling and tenderness
- Lightheadedness
- Belly upset
- Muscle pain
Diagnosis
The doctor will ask about symptoms and health history. A physical exam may be done.
You may be asked to keep a log of your symptoms. It will include when your symptoms start and stop and the date of your period. The doctor will assume PMS based on these details.
Treatment
The goal of treatment is to ease PMS symptoms. More than one method will be needed. Choices are:
Prevention
The risk of PMS may be lowered by:
- Managing stress
- Eating a diet that is low in saturated fat and rich in whole grains, fruits, and vegetables.
- Eating less refined sugar, salt, and caffeine
- Exercising regularly
Stress Management
Stress can trigger PMS and make symptoms worse. Relaxation methods like music or deep breathing may help. Massage and hot baths may also help ease tension in the body.
American Congress of Obstetricians and Gynecologists
Women's Health—Office on Women's Health
CANADIAN RESOURCES:
Health Canada
The Society of Obstetricians and Gynaecologists of Canada
American Congress of Obstetricians and Gynecologists
Women's Health—Office on Women's Health
CANADIAN RESOURCES:
Health Canada
The Society of Obstetricians and Gynaecologists of Canada
References
- Premenstrual syndrome. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/premenstrual-syndrome.
- Premenstrual syndrome (PMS). American Congress of Obstetricians and Gynecologists website. Available at: https://www.acog.org/womens-health/faqs/premenstrual-syndrome.
- Premenstrual syndrome (PMS). Office on Women's Health website. Available at: https://www.womenshealth.gov/menstrual-cycle/premenstrual-syndrome.
Contributors
- Beverly Siegal, MD, FACOG
(C) Copyright 2023 EBSCO Information Services
This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.
To send comments or feedback to our Editorial Team regarding the content please email us at healthlibrarysupport@ebsco.com.