What is pms

Last updated: April 1, 2026

Quick Answer: PMS (Premenstrual Syndrome) is a collection of physical and emotional symptoms occurring in the luteal phase of the menstrual cycle, typically 1-2 weeks before menstruation. Symptoms resolve after menstruation begins.

Key Facts

Understanding Premenstrual Syndrome

Premenstrual Syndrome (PMS) is a collection of physical and psychological symptoms that occur cyclically during the luteal phase of the menstrual cycle, typically beginning 5-11 days before menstruation and resolving within a few days of menstrual flow starting. Approximately 85% of menstruating people experience at least one PMS symptom during their reproductive years, while 5-8% experience severe symptoms significantly impacting daily activities, relationships, and work. The exact cause of PMS remains not fully understood, though hormonal fluctuations play a central role.

Common Symptoms

PMS manifests through diverse physical and emotional symptoms:

Causes and Hormonal Factors

PMS occurs due to hormonal fluctuations in estrogen and progesterone levels during the menstrual cycle. The luteal phase begins after ovulation and features declining estrogen and progesterone levels that fluctuate before menstruation. Individual sensitivity to these hormonal changes varies, with some people experiencing minimal symptoms while others are significantly affected. Serotonin and neurotransmitter changes also contribute to emotional symptoms. Factors like stress, poor nutrition, lack of exercise, and inadequate sleep can intensify PMS symptoms.

Management and Treatment Options

Managing PMS involves lifestyle modifications and medical treatments. Effective strategies include regular aerobic exercise, dietary changes (reducing sodium, sugar, and caffeine; increasing calcium and magnesium), stress reduction techniques, and adequate sleep. Nonsteroidal anti-inflammatory drugs (NSAIDs) help with pain symptoms. Selective serotonin reuptake inhibitors (SSRIs) are effective for emotional symptoms and can be taken throughout the cycle or only during the luteal phase. Severe cases meeting diagnostic criteria for PMDD (Premenstrual Dysphoric Disorder) may require additional medical intervention. Tracking symptoms in a diary helps identify patterns and evaluate treatment effectiveness.

Related Questions

What's the difference between PMS and PMDD?

PMS causes mild to moderate symptoms affecting daily life, while PMDD (Premenstrual Dysphoric Disorder) is a severe condition with intense emotional and physical symptoms that significantly impair functioning. PMDD affects only 3-8% of menstruating people and requires medical treatment.

How can you manage PMS symptoms?

Manage PMS through regular exercise, dietary adjustments (increase calcium and magnesium, reduce caffeine), stress reduction, adequate sleep, and tracking symptoms. Over-the-counter NSAIDs help with pain, while prescription SSRIs can address emotional symptoms.

Why do hormonal changes cause PMS?

PMS occurs when estrogen and progesterone levels fluctuate during the luteal phase after ovulation. Some individuals are sensitive to these natural hormonal changes, which also affect serotonin and other neurotransmitters, causing physical and emotional symptoms that resolve once menstruation begins.

Sources

  1. Wikipedia - Premenstrual Syndrome CC-BY-SA-4.0
  2. ACOG - Premenstrual Syndrome Educational Use