Premenstrual Syndrome (PMS): Track and Prevent Symptoms
What is Premenstrual Syndrome?

A week or two before your period starts, you may notice bloating, headaches, mood swings, or other physical and emotional changes. These monthly symptoms are known as premenstrual syndrome, or PMS. About 85% of women experience some degree of PMS. A few have more severe symptoms that disrupt work or personal relationships, known as premenstrual dysphoric disorder (PMDD).
Symptoms of PMS: Cravings

Many women get specific cravings when PMS strikes, often for sweet or salty foods like chocolate cake. The reasons for this aren't really clear. Other women may lose their appetite or get an upset stomach. Bloating and constipation are also common.
Symptoms of PMS: Acne

Acne is one of the most common signs of PMS, and it doesn't just affect teenagers. Hormonal changes can cause glands in the skin to produce more sebum. This oily substance may clog the pores, triggering a breakout -- a visible reminder that your period is on its way.
Symptoms of PMS: Pain

PMS can trigger a wide range of aches and pains, including:
- Back pain
- Headaches
- Tender breasts
- Joint pain
Symptoms of PMS: Mood Swings

For many women, the worst part of PMS is its unpredictable impact on mood. Irritability, anger, crying spells, depression, and anxiety may come and go in the days leading up to your period. Some women even have trouble with memory and concentration during this time.
Who Gets PMS?

Any woman who has a period can get PMS, but some women are more likely to have symptoms:
- PMS is more likely in the late 20s to mid-40s.
- Older teens tend to have more severe PMS than younger teens.
- PMS may be more severe in the 40s.
- Women who've had at least one pregnancy are more prone to PMS.
- Women with a history of depression or other mood disorder may have more PMS symptoms.
How PMS Affects Other Conditions

PMS can worsen the symptoms of certain chronic conditions, including:
- Asthma and allergies
- Depression and anxiety
- Seizure disorders
- Migraines
Be sure to let your doctor know if your condition gets worse right before your period.
What Causes PMS?

The exact cause of PMS is not clear, but we do know that levels of estrogen and progesterone drop during the week before your period. Many doctors believe this decline in hormone levels triggers the symptoms of PMS. Changes in brain chemicals or deficiencies in certain vitamins and minerals may also play a role. Too many salty foods, alcohol, or caffeine may make symptoms worse as well.
PMS or Something Else?

The symptoms of PMS can be similar to or overlap with other conditions, including:
- Perimenopause
- Depression or anxiety
- Chronic fatigue syndrome
- Thyroid disease
- Irritable bowel disease
The key difference is that PMS symptoms come and go in a distinct pattern, month after month.
Diagnosing PMS: Symptom Tracker

To figure out whether you have PMS, record your symptoms on a tracking form like this one. You may have PMS if:
- Symptoms occur during the five days before your period.
- Once your period starts, symptoms end within four days.
- Symptoms return for at least three menstrual cycles.