PMS & PMDD Companion

Understand the difference between PMS and PMDD, track your symptoms across cycles, and explore evidence-graded management strategies from lifestyle changes to clinical treatment options.

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Understanding PMS vs. PMDD

Both PMS and PMDD involve symptoms in the luteal phase (1-2 weeks before your period), but they differ significantly in severity, impact, and treatment approach.

PMS

Premenstrual Syndrome

Affects up to 75% of menstruating people to some degree. Symptoms are noticeable but manageable, and generally do not prevent you from carrying out daily activities. Symptoms appear in the luteal phase and resolve within a few days of your period starting.

  • Mild to moderate mood changes (irritability, sadness, anxiety)
  • Bloating, breast tenderness, headaches
  • Food cravings, fatigue, difficulty concentrating
  • Sleep disturbances in the days before your period
  • Symptoms are uncomfortable but do not severely impair function
  • Manageable with lifestyle changes and over-the-counter options
PMDD

Premenstrual Dysphoric Disorder

Affects 3-8% of menstruating people. PMDD is a recognized clinical condition in the DSM-5 characterized by severe emotional and physical symptoms that significantly impair daily functioning. It is caused by an abnormal sensitivity to normal hormonal fluctuations, not by abnormal hormone levels.

  • Severe mood swings, intense irritability or anger
  • Marked depressive mood, feelings of hopelessness
  • Significant anxiety, tension, or feeling "on edge"
  • Loss of interest in usual activities
  • Difficulty concentrating, feeling overwhelmed
  • Physical symptoms similar to PMS but often more intense
  • Symptoms severely impair work, school, or relationships
  • Requires medical treatment; SSRIs are first-line therapy
The key difference is functional impairment

PMS is uncomfortable; PMDD is disabling. If your premenstrual symptoms regularly cause you to miss work or school, damage relationships, or trigger thoughts of self-harm, this points toward PMDD and warrants professional evaluation. PMDD is a real medical condition, not a character flaw or something to "push through."

Symptom Tracking Checklist

Check the symptoms you experience in the 1-2 weeks before your period. Track these across at least 2 cycles for the most useful pattern data.

Track Your Luteal Phase Symptoms

Check all that apply during the 1-2 weeks before your period. Use this as a tracking prompt alongside PeriodGuide's daily tracker.

Emotional & Mood

Track intensity (mild/moderate/severe) and which cycle days

Cognitive & Behavioral

Note which days symptoms start and peak

Physical Symptoms

Rate severity 1-5 each day in your tracker

Sleep & Energy

Track hours of sleep and quality rating

Evidence-Graded Management Strategies

Organized by category, from lifestyle interventions to clinical options. Each recommendation shows its evidence strength and includes safety information.

Lifestyle Interventions

Regular Aerobic Exercise

Strong Evidence

150 minutes/week of moderate aerobic exercise (brisk walking, swimming, cycling) significantly reduces both physical and emotional PMS symptoms. Exercise increases serotonin and endorphin levels, improves sleep, and reduces cortisol. Multiple systematic reviews confirm this benefit. Consistency throughout the cycle matters more than intensity.

Safety: Adjust intensity during your most symptomatic days. Gentle movement is better than no movement, but do not force high-intensity workouts when you feel depleted.
Track: Type and duration of exercise, cycle day, symptom severity before and after.

Sleep Optimization

Moderate Evidence

Progesterone rises in the luteal phase and has a sedating metabolite (allopregnanolone), yet many people report worse sleep premenstrually. Prioritizing 7-9 hours, keeping a consistent schedule, and limiting screens before bed can reduce next-day mood symptoms. Cool room temperature (65-68°F) is particularly helpful in the luteal phase when core body temperature rises.

Safety: If you have persistent insomnia, talk to a provider. Avoid relying on alcohol or OTC sleep aids, which can worsen PMS mood symptoms.
Track: Bedtime, wake time, subjective sleep quality, next-day mood rating.

Targeted Nutrition

Moderate Evidence

Complex carbohydrates increase tryptophan availability and serotonin synthesis, which may explain premenstrual carb cravings. Eating smaller, frequent meals with complex carbs, adequate protein, and healthy fats can stabilize blood sugar and reduce mood swings. Reducing caffeine, alcohol, and excess sodium in the luteal phase may also reduce anxiety, breast tenderness, and bloating.

Safety: Do not use PMS as a reason for extreme dieting. Focus on adding nutrient-dense foods, not restricting. If you have disordered eating patterns, work with a professional.
Track: Caffeine and alcohol intake, salt intake, craving intensity, bloating severity.

Supplements

Calcium (1000-1200mg/day)

Strong Evidence

Calcium is one of the best-studied supplements for PMS. A landmark RCT showed 1200mg/day of calcium carbonate reduced overall PMS symptom scores by 48% compared to placebo. Calcium regulates neurotransmitter release and smooth muscle function. Low calcium intake is independently associated with PMS severity. Can be obtained from dairy, fortified foods, or supplements.

Safety: Do not exceed 2500mg/day. Those with kidney stones or hyperparathyroidism should consult their doctor. Take with vitamin D for better absorption. Split doses for best absorption.
Track: Daily dose, which cycle days you took it, overall PMS symptom score each cycle.

Vitamin B6 (50-100mg/day)

Moderate Evidence

Vitamin B6 (pyridoxine) is a cofactor in serotonin and dopamine synthesis. A Cochrane review found that B6 at doses of 50-100mg/day improved PMS symptoms, particularly mood-related ones like depression and irritability. B6 may also help with PMS-related bloating. Best results are seen with daily supplementation throughout the cycle, not just the luteal phase.

Safety: Do NOT exceed 100mg/day. Long-term high-dose B6 (over 200mg/day) can cause peripheral neuropathy (nerve damage). Stay within recommended range. Consider a B-complex instead of isolated B6.
Track: Daily dose, mood symptom ratings, any tingling or numbness (stop and see doctor if this occurs).

Magnesium (200-400mg/day)

Moderate Evidence

Magnesium influences serotonin receptors and helps regulate the hypothalamic-pituitary-adrenal (HPA) axis. Studies show magnesium supplementation reduces PMS-related water retention, mood symptoms, and anxiety. The combination of magnesium with vitamin B6 may be more effective than either alone. Magnesium glycinate or citrate forms are best absorbed and least likely to cause GI issues.

Safety: Avoid magnesium oxide (poor absorption, more GI side effects). Those with kidney disease should consult a doctor. High doses cause loose stools; start low and increase gradually.
Track: Dose, form, bloating levels, mood scores, sleep quality.

Chasteberry (Vitex agnus-castus)

Moderate Evidence

Chasteberry acts on dopamine receptors in the pituitary gland, which may reduce prolactin levels and improve the progesterone-to-estrogen ratio. Several RCTs and a systematic review show it reduces overall PMS symptoms, particularly breast pain, irritability, and mood changes. Standard dose is 20-40mg/day of standardized extract. Benefits may take 2-3 cycles to appear.

Safety: Do NOT use with hormonal contraceptives, dopamine-related medications, or during pregnancy. May cause mild GI upset or headache. Discontinue if you develop a rash. Not recommended for PMDD (insufficient evidence).
Track: Daily dose, breast tenderness, overall PMS score, any side effects. Compare after 3 full cycles.

Clinical Options

These options require evaluation and prescription from a healthcare provider. They are particularly important for PMDD, which often does not respond adequately to lifestyle changes alone.

SSRIs for PMDD

Strong Evidence

Selective serotonin reuptake inhibitors (fluoxetine, sertraline, paroxetine, escitalopram) are the first-line treatment for PMDD, with response rates of 60-70% in clinical trials. Uniquely for PMDD, SSRIs can work within days rather than the usual weeks, which allows for luteal-phase-only dosing (taking the medication only during the 2 weeks before your period). Both continuous and intermittent dosing are effective.

Safety: Prescription only. Side effects may include nausea, headache, sexual dysfunction, or sleep changes. Do not stop abruptly if using continuous dosing. Requires provider monitoring. Not recommended for PMS unless symptoms are severe.
Track: Dosing schedule (continuous vs. luteal-only), symptom scores before and after starting, any side effects, timing of symptom relief.

Hormonal Options

Moderate Evidence

Some combined oral contraceptives, particularly those containing drospirenone (like Yaz/Yasmin with a 24/4 dosing regimen), have FDA approval or clinical evidence for PMS/PMDD symptom reduction. By suppressing ovulation and providing steady hormone levels, they reduce the cyclical hormonal fluctuations that trigger symptoms. Continuous use (skipping placebo pills) may provide additional benefit for some.

Safety: Not suitable for everyone. Contraindications include history of blood clots, certain migraines with aura, smoking over age 35. Some people experience mood worsening on hormonal contraceptives. Requires provider evaluation.
Track: Which formulation, dosing schedule, mood and physical symptom scores monthly, any new side effects.

Is It PMS or PMDD? Self-Assessment

This is a screening tool only and cannot replace a clinical diagnosis. PMDD diagnosis requires prospective daily symptom tracking for at least 2 consecutive cycles. Answer based on your experience during the 1-2 weeks before your period.

Non-Diagnostic Tool

This self-assessment is designed to help you reflect on your symptoms and prepare for a conversation with a healthcare provider. It is not a diagnosis. Only a qualified professional can diagnose PMDD using prospective daily ratings over at least 2 menstrual cycles.

1. How would you describe the intensity of your premenstrual mood symptoms (sadness, irritability, anxiety)?
2. Do your premenstrual symptoms cause problems in your relationships, work, or school?
3. Do you experience marked mood swings, sudden sadness or tearfulness, or increased sensitivity to rejection?
4. Do you feel hopeless, very anxious, or have thoughts of self-harm during the premenstrual phase?
5. Do your symptoms clearly start in the luteal phase and improve within a few days of your period starting?

Your responses suggest PMS-range symptoms

Based on your responses, your symptoms appear to fall within the PMS range. Lifestyle interventions, supplements (especially calcium), and the strategies above are good starting points. If your symptoms worsen or stop responding to self-management, consult a healthcare provider. Consider tracking your symptoms daily for 2-3 cycles to confirm patterns.

Your responses suggest possible PMDD-level symptoms

Based on your responses, your symptoms may fall within the PMDD range. We strongly recommend speaking with a healthcare provider who is familiar with PMDD. Bring your tracked symptom data and this self-assessment. PMDD is a treatable condition, and effective options like SSRIs and specialized hormonal approaches exist.

Prepare for Your Doctor Visit

More tracking would help clarify your pattern

Your responses suggest symptoms that could be PMS, PMDD, or potentially something else (like an underlying mood disorder with premenstrual worsening). The best next step is to track your symptoms daily for at least 2 full cycles, noting intensity and which cycle day symptoms occur. If symptoms are present throughout your cycle (not just premenstrually), mention this to your provider.

If you are in crisis or having thoughts of self-harm Please reach out for support. In the US, contact the 988 Suicide & Crisis Lifeline (call or text 988) or the Crisis Text Line (text HOME to 741741). You are not alone, and what you're feeling is not your fault. PMDD is a medical condition with effective treatments.

When to Seek Care

You deserve support. Here are signs that it's time to talk to a healthcare provider.

Your pain and symptoms are real

If a healthcare provider dismisses your concerns, you have every right to seek a second opinion. PMDD is recognized in the DSM-5 and by major medical organizations worldwide. Bring your tracked data, describe the functional impact on your life, and advocate for proper evaluation.

Prepare for Your Doctor Visit

Walking in prepared makes a difference. Here's what to bring and what to discuss.

What to Bring

  • 2-3 months of daily symptom tracking data
  • Your cycle length and period dates
  • List of current medications and supplements
  • Notes on what you've already tried and how it worked
  • Your PeriodGuide Clinic Pack summary

Questions to Ask

  • "Based on my tracked data, do my symptoms suggest PMS or PMDD?"
  • "What first-line treatments would you recommend for my specific symptoms?"
  • "Would luteal-phase SSRI dosing be appropriate for me?"
  • "Should I be evaluated for other conditions that mimic PMS/PMDD?"
  • "When should I follow up to assess whether treatment is working?"

What to Expect

  • Questions about your symptom timeline and severity
  • A review of your medical and family history
  • Possible blood tests to rule out thyroid issues or other causes
  • Discussion of treatment options tailored to your symptoms
  • A follow-up plan to assess treatment effectiveness
Important Medical Disclaimer The information on this page is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. PMS and PMDD are medical conditions that may require professional care. The self-assessment tool is a screening aid only and cannot diagnose PMDD. Always consult a qualified healthcare provider for diagnosis and treatment decisions. If you are experiencing suicidal thoughts or self-harm urges, please contact emergency services or a crisis line immediately.