What's the difference between premenstrual dysphoric disorder (PMDD) and premenstrual syndrome (PMS)? How is PMDD treated?

Answer From Tatnai Burnett, M.D.

Premenstrual dysphoric disorder (PMDD) is a severe, sometimes disabling extension of premenstrual syndrome (PMS). Although PMS and PMDD both have physical and emotional symptoms, PMDD causes extreme mood shifts that can disrupt daily life and damage relationships.

In both PMDD and PMS, symptoms usually begin seven to 10 days before your period starts and continue for the first few days of your period.

Both PMDD and PMS may cause bloating, breast tenderness, fatigue, and changes in sleep and eating habits. In PMDD, however, at least one of these emotional and behavioral symptoms stands out:

  • Sadness or hopelessness
  • Anxiety or tension
  • Extreme moodiness
  • Marked irritability or anger

The cause of PMDD isn't clear. Underlying depression and anxiety are common in both PMS and PMDD, so it's possible that the hormonal changes that trigger a menstrual period worsen the symptoms of mood disorders.

Treatment of PMDD is directed at preventing or minimizing symptoms and may include:

  • Antidepressants. Selective serotonin reuptake inhibitors (SSRIs), such as fluoxetine (Prozac, Sarafem, others) and sertraline (Zoloft), may reduce emotional symptoms, fatigue, food cravings and sleep problems. You can reduce symptoms of PMDD by taking SSRIs all month or only during the interval between ovulation and the start of your period.
  • Birth control pills. Taking birth control pills with no pill-free interval or with a shortened pill-free interval may reduce PMS and PMDD symptoms.
  • Nutritional supplements. Consuming 1,200 milligrams of calcium daily may possibly reduce symptoms of PMS and PMDD. Vitamin B-6, magnesium and L-tryptophan also may help, but talk with your doctor for advice before taking any supplements.
  • Herbal remedies. Some research suggests that chasteberry (Vitex agnus-castus) may possibly reduce irritability, mood swings, breast tenderness, swelling, cramps and food cravings associated with PMDD, but more research is needed. The U.S. Food and Drug Administration doesn't regulate herbal supplements, so talk with your doctor before trying one.
  • Diet and lifestyle changes. Regular exercise often reduces premenstrual symptoms. Cutting back on caffeine, avoiding alcohol and stopping smoking may ease symptoms, too. Getting enough sleep and using relaxation techniques, such as mindfulness, meditation and yoga, also may help. Avoid stressful and emotional triggers, such as arguments over financial issues or relationship problems, whenever possible.

If you have symptoms of PMDD, talk with your doctor about testing and treatment options.

With

Tatnai Burnett, M.D.

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March 11, 2021 See more Expert Answers

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