Premenstrual syndrome, or PMS, is a group of physical and emotional symptoms that start one to two weeks before your period. Most women have at least some symptoms of PMS, and the symptoms go away after their periods start. The symptoms may range from mild to severe.

Premenstrual dysphoric disorder (PMDD) is a severe type of PMS. With PMDD, the symptoms are severe enough to interfere with your life. PMDD much less common than PMS.

Researchers don't know exactly what causes PMS. Changes in hormone levels during the menstrual cycle may play a role. These changing hormone levels may affect some women more than others.

PMS symptoms are different for everyone. You may get physical symptoms, emotional symptoms, or both. Your symptoms may also change throughout your life.

Physical symptoms may include:

• Breast swelling and tenderness
• Acne
• Bloating and weight gain
• Headache
• Joint pain
• Backache
• Constipation or diarrhea
• Food cravings

Emotional symptoms may include:

• Irritability
• Mood swings
• Crying spells
• Depression
• Anxiety
• Sleeping too much or too little
• Trouble with concentration and memory
• Less interest in sex

You may wish to see your health care provider if your symptoms bother you or affect your daily life.

There is no single test for PMS. Your provider will talk with you about your symptoms, including when they happen and how much they affect your life. To be diagnosed with PMS, your symptoms must:

• Happen in the five days before your period for at least three menstrual cycles in a row
• End within four days after your period starts
• Keep you from enjoying or doing some of your normal activities

Your provider may wish to do tests to rule out other conditions which may cause similar symptoms.

No single PMS treatment works for everyone. If your symptoms are not severe, you may be able to manage them with:

• Over-the-counter pain relievers such as ibuprofen, aspirin, or naproxen, to help ease cramps, headaches, backaches, and breast tenderness
• Getting regular exercise
• Getting enough sleep
• Eating healthy foods
• Avoiding salt, caffeine, sugar, and alcohol in the two weeks before your period

Some studies have shown that certain vitamins may help with some symptoms of PMS. They include calcium and vitamin B6.

Some women take certain herbal supplements for PMS symptoms. But there is not enough evidence to prove that supplements are effective for PMS. Check with your provider before taking any vitamins or supplements.

If you are not able to manage your PMS symptoms, your provider may suggest prescription medicines. These medicines may also be used to treat PMDD. They include:

• Hormonal birth control, which may help with the physical symptoms of PMS. But sometimes they may make the emotional symptoms worse. You may need to try several different types of birth control before you find the right one.
• Antidepressants, such as selective serotonin reuptake inhibitors (SSRIs), which may help with emotional symptoms.
• Diuretics ("water pills") to reduce symptoms of bloating and breast tenderness.
• Anti-anxiety medicine to ease symptoms of anxiety.

Dept. of Health and Human Services Office on Women's Health