Premenstrual Syndrome and Dysphoric Disorder

Premenstrual syndrome (PMS) is a recurrent cluster of physical and emotional symptoms that arise in the luteal phase of the menstrual cycle and resolve after menstruation begins. Premenstrual dysphoric disorder (PMDD) is a more severe, predominantly affective form, defined by marked mood symptoms that substantially impair functioning.

Definition

Premenstrual syndrome is a recurrent set of physical and behavioural symptoms confined to the luteal phase of the menstrual cycle that remit with menstruation; premenstrual dysphoric disorder is a severe, predominantly mood-based variant with significant functional impairment.

Scope

This topic covers the definition and symptom timing of PMS and PMDD, the cyclic luteal-phase pattern that distinguishes them from non-cyclic conditions, the relationship to ovarian hormone fluctuation, and the recognition of PMDD as a defined diagnostic category. It is descriptive reference material and does not prescribe treatment.

Core questions

• What defines the cyclic, luteal-phase pattern of PMS and PMDD?
• How does PMDD differ from milder premenstrual symptoms?
• How is symptom timing relative to the cycle used to characterise these conditions?

Key concepts

• Luteal-phase symptom timing
• Cyclic remission with menstruation
• Premenstrual dysphoric disorder (PMDD)
• Ovarian hormone fluctuation and central sensitivity
• Prospective symptom charting
• Functional impairment

Mechanisms

Symptoms of PMS and PMDD are tied to the luteal phase that follows ovulation, and the leading account holds that they reflect a heightened central sensitivity to the normal cyclic fluctuation of ovarian steroids rather than abnormal hormone levels as such. Progesterone metabolites acting on neurotransmitter systems, including serotonergic signalling, are implicated in the affective symptoms. Because absolute hormone concentrations are typically normal, the defining feature is the timing and cyclic remission of symptoms rather than a static hormonal abnormality, which is why prospective charting across cycles is central to characterisation.

Clinical relevance

Distinguishing cyclic premenstrual symptoms from non-cyclic mood or physical conditions rests on demonstrating that symptoms recur in the luteal phase and remit after menses, which is why the timing of symptoms is emphasised. PMDD is recognised as a defined category reflecting the more severe affective end of the spectrum. This entry describes the concepts and is not a basis for individual diagnosis or treatment.

Epidemiology

Mild premenstrual symptoms are very common among menstruating people, whereas PMDD, the severe affective form, affects a smaller proportion. Symptoms occur only in ovulatory cycles and follow the cyclic luteal-phase pattern.

Evidence & guidelines

A Lancet seminar synthesises the clinical picture and pathophysiologic understanding of premenstrual syndrome, and the review supporting the DSM-5 category sets out the evidence for recognising premenstrual dysphoric disorder as a distinct diagnostic entity.

History

Premenstrual symptom clusters were described under the label premenstrual tension earlier in the twentieth century and later reframed as premenstrual syndrome. Accumulating evidence on the severe affective form led to the formal recognition of premenstrual dysphoric disorder as a diagnostic category in DSM-5.

Debates

Should premenstrual dysphoric disorder be a distinct psychiatric diagnosis?

The formalisation of PMDD as a DSM-5 category was supported by evidence of a severe, impairing affective syndrome with a defined cyclic pattern, while discussion continued about diagnostic boundaries and the medicalisation of cyclic symptoms.

Seminal works

• yonkers-2008
• epperson-2012

Frequently asked questions

What is the difference between PMS and PMDD?

Both follow a cyclic luteal-phase pattern that remits with menstruation, but PMDD is a more severe, predominantly mood-based form defined by marked affective symptoms and significant functional impairment.

Are premenstrual symptoms caused by abnormal hormone levels?

The prevailing view is that hormone levels are typically normal and that symptoms reflect a heightened central sensitivity to the normal cyclic fluctuation of ovarian hormones; this entry is descriptive and not treatment advice.