The Heavy Physical and Psychological Burden of PMDD

Premenstrual disorders (PMDs), including premenstrual dysphoric disorder (PMDD), adversely affect the lives of millions of women worldwide. Most girls and women — as many as 80%-90%— will experience some premenstrual discomfort such as irritability, depressed mood, food or alcohol cravings, bloating, body aches, breast pain, constipation, or fatigue.

Diagnosable menstrual disorders include, collectively, premenstrual syndrome (PMS); PMDD, formerly called late luteal phase dysphoric disorder; and premenstrual worsening of another medical condition.

The most debilitating of these is PMDD, which has an estimated prevalence of about 4%-8% in women of reproductive age, according to obstetrician/gynecologist Hoosna Haque, MD, an assistant professor of medicine at Columbia University Irving Medical Center in New York City.

“It’s difficult to be sure because this condition is underreported,” said Luu D. Ireland, MD, MPH, an assistant professor of obstetrics and gynecology at UMass Memorial Medical Center in Worcester, Massachusetts. “But more women are coming forward, and there’s more discussion and media coverage of this condition.”

Occurring in the same post-follicular timeframe as PMS, PMDD takes cyclical discomfort to a more intense level, with a trifecta of affective comorbidities, somatic manifestations, and behavioral changes, all of which can seriously impair daily functioning, including work, physical activities, and personal relationships. Romantic and marital relationships can be particularly impaired.

Although recent cost figures are lacking, PMDs exact a considerable economic toll with increased direct healthcare costs from doctor visits and pharmaceuticals. A 2010 study found that US women with PMS were more likely to accrue in excess of $500 in healthcare visit costs over 2 years, and the figure would likely be higher today. PMDs also increase work/school absenteeism and reduce productivity.

Etiology

Brain areas that regulate emotion and behavior contain receptors for estrogen, progesterone, and other sex hormones, which affect the functioning of neurotransmitter systems influencing mood and thinking. Although the precise pathophysiology remains unclear, PMDD is likely multifactorial and results in a heightened sensitivity to normal fluctuations in estrogen and progesterone during the luteal phase of the menstrual cycle and dysfunction of the serotonin and gamma-aminobutyric acid neurotransmitter systems.

Patients with PMDD have lower levels of cortisol and beta-endorphins during both the follicular and luteal phases, suggesting abnormalities in the hypothalamic-pituitary-gonadal axis (HPGA), which is consistent with dysregulation in mood disorders.

Risk Factors

These include family history, past traumatic events, smoking, chronic pain syndrome, and obesity. There may be a genetic component as recent studies have suggested the involvement of the gene that codes for the serotonergic 5HT1A receptor and allelic variants of ESR1 in the development of PMS/PMDD.

A particularly concerning aspect of PMDs of any sort is their possible association with a higher risk for death from non-natural causes. In a recent Swedish study, which did not distinguish between PMDs in general and PMDD in particular, patients had an almost 60% greater risk for death from non-natural causes and nearly twice the risk for death by suicide compared with women without PMDs.

Those diagnosed with a PMD at an early age showed excess mortality, and the risk for suicide was elevated regardless of age. “These findings support the need for careful follow-up for young women with PMDs and the need for suicide prevention strategies,” lead author Marion Opatowski, PhD, a medical epidemiologist at Karolinska Institutet in Stockholm, Sweden, wrote. “Women with severe PMDD should definitely be monitored for suicidal thoughts or behavior and they should have an emergency outreach plan in place,” Haque added.

Diagnosis

Although the somatic manifestations of PMDD resemble those of PMS, they are more severe and associated psychological symptoms are greater. “In my experience, PMDD symptoms can last the whole 2 weeks of the luteal phase, whereas PMS might occur a couple of days before menstruation,” said Ireland.

Symptoms include labile mood, nervousness, hopelessness, anger and aggressiveness, as well as tension and irritability. Those affected may have suicidal thoughts or even behaviors. In addition to a lethargic loss of interest in normal activities, patients with PMDD may feel paranoid, confused, exhausted, or out of control and experience insomnia or hypersomnia. They may have trouble concentrating or remembering. Some patients with PMDD may already be prone to attention-deficit/hyperactivity disorder and non–cycle-related depression, anxiety, and panic attacks.

Diagnosis is based on the presence of any five of the typical affective, somatic, or behavioral symptoms outlined above in the week before onset of menses.

“It’s important to do a careful diagnosis for PMDD and rule out other underlying conditions such as existing depressive or anxiety disorders,” said Haque. “Symptoms tend to be more intense in periods of high hormonal fluctuation such as in the postpartum and perimenopause periods. Women with PMDD should be monitored for postpartum depression.”

PMDD is considered both a gynecologic-genitourinary disorder and an affective condition.

In 2013, it was controversially included as a depressive disorder in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition. Strongly advocated by some patients, psychiatrists, and pharmaceutical companies, its inclusion was criticized by psychologists and generalists, who feared it would lead to overdiagnosis and pathologization of normal female hormonal changes. Women’s advocates protested that this inclusion would stigmatize female biology and harm their advance in society and the workplace, while some doctors continued to dismiss PMDD as not a serious concern.

Treatments

In its latest clinical practice guideline on PMDs, the American College of Obstetricians and Gynecologists (ACOG), for which Ireland served as the lead author, recommends that most patients with PMDD get medical treatment and outlines the following therapies, based on varying degrees of evidence strength.

Antidepressants. These may benefit patients with strong affective symptoms. Selective serotonin reuptake inhibitors such as sertraline (Zoloft), citalopram (Celexa), escitalopram (Lexapro), or fluoxetine (Prozac) are first choices.

Antidepressants may interrupt aberrant signaling in the HPGA, the circuit linking brain and ovaries and regulating the reproductive cycle. Serotonin norepinephrine reuptake inhibitor venlafaxine (Effexor) may also improve symptoms, but other types of antidepressants have not proven effective.

“The response to these well-tolerated drugs is rapid and can happen in the first 2 days,” said Ireland. The drugs may be taken either just in the luteal period or over the month, especially by patients with chronic depression or anxiety.

Hormonal therapy. ACOG recommends the use of combined oral contraceptives (COCs), gonadotropin-releasing hormone (GnRH) agonists to induce anovulation (with combined add-back hormones), progestin-only methods, and noncontraceptive continuous estrogen formulations. It notes, however, that COCs have not been more effective than placebo in reducing depressive symptom scores.

If symptoms do not improve over two to three cycles, an alternate therapy should be considered. Haque recommends an assessment after three cycles and then yearly.

Some women in her practice take both antidepressant and hormone therapy. “Unfortunately, there are no new pharmaceutical treatments on the horizon, but we have good ones already and we would love for patients to utilize them more often,” Ireland said.

Nonsteroidal anti-inflammatory drugs. Limited evidence shows these may reduce physical symptoms such as abdominal cramps, headaches, and general body aches, as well as some mood-related symptoms, which may be an indirect effect of pain alleviation.

Surgery. For women with the most severe intractable symptoms, bilateral oophorectomy with or without hysterectomy may be a last-resort option when medical management has failed. A trial period of GnRH agonist therapy (with or without adjunctive estrogen add-back treatment) is advised before surgery to predict a patient’s response to surgical management.

Acupuncture. ACOG suggests that acupuncture may help manage physical and affective premenstrual symptoms.

Diet. The usual dietary advice for premenstrual symptoms — such as consuming less caffeine, sugar, or alcohol and eating smaller, more frequent meals — is unlikely to help women with PMDD.

Exercise. Although it has not been well studied for PMDD, aerobic exercises such as walking, swimming, and biking tend to improve mood and energy levels in general. Exercise may reduce symptoms through several pathways, including effects on beta-endorphin, cortisol, and ovarian hormone levels.

Supplements. Vitamin B6, calcium and magnesium supplements, and herbal remedies are not supported by consistent or compelling evidence of efficacy. ACOG conditionally recommends calcium supplementation of 100-200 mg/d in adults to help manage physical and affective symptoms.

A small study suggested that supplemental zinc may improve both physical and psychological symptoms.

Cognitive-behavioral therapy. This treatment aims to interrupt negative and irrational thought patterns and may include awareness and education, as well as relaxation techniques, problem-solving and coping skills, and stress management. It has been associated with small to moderate improvement in anxiety and depression, said Ireland.

Peer support. Patients should consider joining a support group. The International Association for Premenstrual Disorders can help patients connect and develop coping skills.

The bottom line is that people with strong symptomatic evidence of PMDD should have medical intervention — to the benefit of their health and quality of life. Screening for PMDD should be part of women’s wellness examinations, said Ireland. “The impact of PMDD should not be minimized or dismissed,” said Haque. “And patients need to know there are very effective treatments.”

Ireland and Haque had no competing interests with regard to their comments.