DSM-5 and PMDD: what it means

DSM-5 is the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders, the reference book clinicians use to diagnose mental health conditions. The current text revision is DSM-5-TR.

Premenstrual dysphoric disorder (PMDD) became an official diagnosis when DSM-5 was published in 2013, listed among the depressive disorders [5].

To meet the DSM-5 criteria, someone needs:

• At least five symptoms in the final week before a period
• At least one of those symptoms is a mood symptom: mood swings, rejection sensitivity, irritability or anger, low mood, or anxiety
• Symptoms that ease within a few days of the period starting, and stay minimal the following week

These patterns need to show up across most cycles, not just once. For what the full diagnosis covers, see PMDD (premenstrual dysphoric disorder), explained.

PMS and PMDD both show up in the days before a period, but DSM-5 only names one of them.

PMS describes common physical or emotional symptoms in the one to two weeks before bleeding that ease once a period starts. It isn't a DSM-5 diagnosis.

PMDD is the DSM-5 diagnosis, and it needs more: a set number of symptoms, a mood symptom among them, and a pattern confirmed over more than one cycle.

What's happening hormonally in the days before a period is the same for both: estrogen and progesterone drop in the luteal phase. Read more about the luteal phase: what's happening in your body and mood.

Applying diagnostic criteria for PMDD consistently has always been harder than it sounds. Even under DSM-IV, the manual that came before DSM-5, researchers ran into this.

One scoring system, the Carolina Premenstrual Assessment Scoring System (C-PASS), works through this by scoring two or more months of daily ratings against the DSM-5 criteria [1].

The numbers show why the method matters so much:

• A literal yes or no threshold for symptoms correctly identified only 28% of symptomatic cycles, compared with 92% using the study's optimal combination of thresholds (Journal of Psychiatric Research, 2003) [2]
• An earlier study found PMDD prevalence estimates ranging from 1.0% to 7.1% depending on how DSM-IV symptoms were measured (Journal of Psychosomatic Obstetrics and Gynaecology, 1997) [3]

DSM-5 built on this work, and C-PASS applies the current criteria the same way each time.

Screening questionnaires built on DSM-5 criteria have since been validated in Spanish and Chinese samples, which helps the diagnosis travel across languages [4] [6].

One review cautioned that clinicians should be wary about using the newer DSM-5 term as a diagnosis for patients (Tijdschrift voor psychiatrie, 2014) [5].

Daily tracking, not memory, is what carries the diagnosis.

Getting the DSM-5 criteria right has real consequences. It can decide who qualifies for treatment guided by a PMDD diagnosis: SSRIs taken only in the luteal phase, certain hormonal contraceptives, or CBT, with a doctor deciding what fits.

A few related terms worth knowing:

• Corpus luteum: the ovarian structure that makes the progesterone and estrogen that fall before a period. See Corpus Luteum: what it means.
• Allopregnanolone: a hormone byproduct some brains react to differently in PMDD. See Allopregnanolone: what it means.

For the biology behind the DSM-5 timing window, menstrual cycle hormones, phase by phase walks through what's rising and falling when. For what might drive PMDD in the first place, see what causes PMDD?.