Premenstrual Syndrome (PMS) and Premenstrual Dysphoric Disorder (PMDD)
What is Premenstrual Syndrome (PMS) and Premenstrual Dysphoric Disorder (PMDD)?
Premenstrual syndrome, or PMS, is a group of physical and emotional symptoms that happen in the days or weeks before your period starts. These symptoms can include mood swings, breast tenderness, fatigue, bloating, and food cravings. PMS affects up to 75% of women who menstruate, though severity varies widely from person to person.
Premenstrual dysphoric disorder, known as PMDD, is a more severe form of PMS that significantly disrupts daily life. Women with PMDD experience intense mood changes, including depression, anxiety, and irritability that can interfere with work, relationships, and normal activities. PMDD affects about 5% to 8% of women of reproductive age.
Both conditions are linked to hormonal changes during the menstrual cycle, particularly fluctuations in progesterone and estrogen. These hormone shifts affect brain chemicals like serotonin, which regulates mood, sleep, and appetite. Understanding your hormone levels can help identify the root cause of symptoms and guide treatment decisions.
Symptoms
- Mood swings, irritability, or anger
- Depression, sadness, or crying spells
- Anxiety, tension, or feeling on edge
- Difficulty concentrating or brain fog
- Fatigue or low energy
- Sleep problems, either too much or too little
- Food cravings or increased appetite
- Breast tenderness or swelling
- Bloating or weight gain
- Headaches or joint pain
- Digestive changes like constipation or diarrhea
Symptoms typically appear 7 to 10 days before menstruation begins and improve within a few days after your period starts. Some women experience mild discomfort, while others face symptoms severe enough to miss work or social activities. PMDD symptoms are more intense and can include thoughts of self-harm or hopelessness that require immediate medical attention.
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Causes and risk factors
The exact cause of PMS and PMDD is not fully understood, but hormonal fluctuations during the menstrual cycle play a central role. After ovulation, progesterone levels rise and then drop sharply if pregnancy does not occur. This rapid decline in progesterone can trigger symptoms in sensitive individuals. Low progesterone levels in the luteal phase, the second half of your cycle, may worsen symptoms. These hormonal changes affect neurotransmitters like serotonin and gamma-aminobutyric acid, which regulate mood and stress responses.
Several risk factors increase the likelihood of developing PMS or PMDD. A family history of these conditions suggests a genetic component. Stress, poor sleep, and lack of exercise can worsen symptoms. Nutritional deficiencies in magnesium, calcium, and B vitamins may contribute to symptom severity. Women with a history of depression, anxiety, or postpartum depression are at higher risk for PMDD. Smoking and excessive caffeine or alcohol intake can also make symptoms worse.
How it's diagnosed
Diagnosis begins with tracking your symptoms across at least two menstrual cycles. Keep a daily log of physical and emotional symptoms, noting when they occur relative to your period. For PMS, symptoms must be present in the week before menstruation and improve within a few days after bleeding starts. For PMDD, symptoms must be severe enough to interfere with work, school, or relationships, and at least five specific symptoms must be present.
Blood tests can help identify hormonal imbalances that contribute to PMS and PMDD. Testing progesterone levels during the luteal phase can reveal if levels are lower than expected. Rite Aid offers progesterone testing as an add-on to our blood panel, making it easy to check your hormone levels at over 2,000 Quest Diagnostics locations nationwide. Other tests may rule out thyroid problems or vitamin deficiencies that can mimic PMS symptoms. A healthcare provider will use your symptom diary and test results to confirm a diagnosis and create a treatment plan.
Treatment options
- Regular exercise, at least 30 minutes most days of the week, to improve mood and reduce bloating
- Eat small, frequent meals with complex carbohydrates to stabilize blood sugar and reduce cravings
- Reduce caffeine, alcohol, salt, and sugar intake, especially in the two weeks before your period
- Stress reduction through yoga, meditation, or deep breathing exercises
- Sleep 7 to 9 hours per night to support hormone balance and mood regulation
- Calcium supplements, 1,000 to 1,200 mg daily, which may reduce symptom severity
- Magnesium supplements, 200 to 400 mg daily, to help with bloating and mood
- Vitamin B6 supplements, up to 100 mg daily, to support neurotransmitter production
- Hormonal birth control to stabilize hormone fluctuations and reduce symptoms
- Selective serotonin reuptake inhibitors, or SSRIs, for PMDD to improve mood symptoms
- Diuretics for severe bloating and water retention
- Nonsteroidal anti-inflammatory drugs, or NSAIDs, for pain and cramping
Work with your healthcare provider to find the right combination of treatments for your symptoms. Lifestyle changes often provide significant relief and should be tried first. For severe PMDD symptoms, medication may be necessary to restore quality of life.
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- Simple blood draw at your nearest lab
- Results in days, not weeks
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Frequently asked questions
PMS involves mild to moderate symptoms that cause some discomfort but usually do not prevent you from functioning normally. PMDD is a severe form that causes intense mood changes and physical symptoms that significantly interfere with work, relationships, and daily activities. PMDD affects only about 5% to 8% of menstruating women, while PMS affects up to 75%. If your symptoms are severe enough to make you miss work or avoid social situations, you may have PMDD and should talk to a healthcare provider.
Yes, low progesterone levels during the luteal phase of your menstrual cycle can contribute to PMS and PMDD symptoms. Progesterone helps regulate mood by affecting brain chemicals like serotonin and GABA. When progesterone drops too quickly or is too low in the second half of your cycle, it can trigger mood swings, anxiety, and depression. Testing your progesterone levels can help identify if hormonal imbalances are contributing to your symptoms.
Regular exercise, especially aerobic activity like walking or swimming, can significantly reduce PMS symptoms by improving mood and reducing bloating. Eating small, frequent meals with complex carbohydrates helps stabilize blood sugar and reduce cravings. Reducing caffeine, alcohol, and salty foods in the two weeks before your period can minimize breast tenderness and bloating. Stress management techniques like yoga and meditation also help regulate mood and reduce symptom severity.
Many women find relief from lifestyle changes and supplements alone, especially for mild to moderate PMS. If symptoms interfere with your daily life despite lifestyle modifications, medication may be helpful. Hormonal birth control can stabilize hormone fluctuations, while SSRIs are highly effective for PMDD mood symptoms. Your healthcare provider will recommend medication based on symptom severity and how much they impact your quality of life.
PMDD specifically involves severe mood symptoms including depression, sadness, and feelings of hopelessness. These symptoms are tied to hormonal fluctuations and typically improve once menstruation begins. However, women with PMDD are at higher risk for developing major depression, and some may have depression throughout the month that worsens premenstrually. If you experience persistent sadness or thoughts of self-harm, seek immediate help from a mental health professional.
Calcium supplementation of 1,000 to 1,200 mg daily has been shown to reduce PMS symptoms in multiple studies. Magnesium, 200 to 400 mg daily, helps with bloating, breast tenderness, and mood symptoms. Vitamin B6, up to 100 mg daily, supports production of mood-regulating neurotransmitters. Some women also benefit from vitamin D, omega-3 fatty acids, and evening primrose oil, though evidence is more limited for these supplements.
Symptoms typically begin 7 to 10 days before menstruation starts and improve within a few days after your period begins. Some women experience symptoms for only 3 to 4 days, while others have symptoms for up to two weeks each cycle. The timing is usually consistent from month to month, which helps distinguish PMS and PMDD from other mood or health conditions.
Yes, stress can significantly worsen PMS and PMDD symptoms. Stress affects hormone production and neurotransmitter balance, making you more sensitive to hormonal fluctuations. Chronic stress also depletes nutrients like magnesium and B vitamins that help regulate mood. Managing stress through regular exercise, adequate sleep, and relaxation techniques can reduce symptom severity and improve overall wellbeing.
PMS and PMDD are tied to menstrual cycles and typically persist until menopause, when hormonal fluctuations stop. However, symptom severity can change over time and often improves with lifestyle modifications and treatment. Some women find symptoms worsen in their 30s and 40s as hormone patterns change. Addressing the root causes through hormone balancing, nutrition, and stress management can provide long-term relief even if the underlying tendency remains.