Chest Pain During Menses: Causes and Clinical Approach
Chest pain during menstruation in reproductive-age women can result from hormonal fluctuations affecting coronary vasomotor tone (menstruation-related angina), thoracic endometriosis, or exacerbation of underlying coronary artery disease—all requiring systematic evaluation to distinguish from life-threatening cardiac causes.
Primary Menstruation-Related Causes
Menstruation-Related Angina (Catamenial Angina)
This condition affects women from puberty to menopause and presents as recurrent nonexertional left-sided chest pain coinciding with menses, often accompanied by diaphoresis, hot flushes, and persistent lethargy 1, 2, 3. The pathophysiology centers on estrogen decline during the postovulation phase and at menstruation's end, which removes estrogen's cardioprotective effects on cardiomyocytes, endothelial cells, and smooth muscle cells 1.
Key distinguishing features:
- Monthly pattern synchronized with menstrual cycle
- Can occur with or without underlying coronary disease
- May present with troponin elevation 3
- Coronary spasm is the underlying mechanism 2
Thoracic Endometriosis
Endometriosis affecting the pleural cavity causes cyclic chest pain, dyspnea, and potentially hemothorax during menstruation 4, 5. This represents chronic inflammation from ectopic endometrial tissue in the thorax 6. The diagnosis requires high clinical suspicion when chest pain is:
- Right-sided (most common)
- Associated with dyspnea
- Recurrent with each menstrual period
- May present with pleural effusion on imaging 5
Cardiac Considerations That Must Be Excluded
Women presenting with chest pain are at risk for underdiagnosis, and potential cardiac causes must always be considered 7. This is critical because:
- Women commonly present with accompanying symptoms beyond typical chest pain—including nausea, fatigue, shortness of breath, palpitations, jaw/neck pain, and back pain 7
- Traditional risk assessment tools often underestimate risk in women and misclassify them as having nonischemic chest pain 7
- Chest pain remains the predominant symptom in women with acute coronary syndrome, occurring with equal frequency as men 7
Hormonal Influences on Cardiovascular Risk
Menstrual disorders themselves increase hypertension and cardiovascular disease risk 6. Women with heavy, painful, or irregular menstruations or premenstrual syndrome have higher cardiovascular risk profiles 6. Additionally:
- Both early and late menarche associate with hypertension and cardiometabolic risk factors 6
- Estrogen fluctuations affect angiotensin-converting enzyme activity, which is involved in bradykinin catabolism 8
Diagnostic Approach
History Taking Priorities
Obtain a focused history emphasizing:
- Temporal relationship: Does pain occur exclusively or predominantly during menses? Which days of the cycle?
- Pain characteristics: Location (left-sided suggests catamenial angina; right-sided suggests thoracic endometriosis), quality, duration
- Associated symptoms: Diaphoresis, hot flushes, lethargy (catamenial angina) vs. dyspnea, pleuritic features (thoracic endometriosis)
- Menstrual history: Regularity, dysmenorrhea, dyspareunia (suggests endometriosis)
- Cardiovascular risk factors: Family history, hypertension, dyslipidemia, smoking, diabetes 7
- Premenstrual syndrome history: May indicate hormonal sensitivity 2
Physical Examination
Look for:
- Point tenderness (makes ischemia less likely) 7
- Vital signs, particularly blood pressure
- Cardiac auscultation for murmurs or extra sounds
- Chest wall examination for reproducible pain
Initial Testing
For suspected cardiac etiology:
- ECG (may show ST changes during symptomatic periods)
- Cardiac biomarkers (troponin) if presenting during acute episode
- Exercise tolerance test (timing relative to menstrual cycle matters) 1
- Echocardiogram to assess cardiac function 1
For suspected thoracic endometriosis:
- Chest imaging (X-ray or CT) during symptomatic period to identify pleural effusion or hemothorax 5
- Pelvic ultrasound or MRI to identify associated ovarian endometriomas 4
Advanced Evaluation
Coronary angiography with acetylcholine provocation testing should be timed according to the menstrual cycle in suspected catamenial angina, as coronary spasm may only be inducible during specific phases 2. Consider performing catheterization during the symptomatic phase (during or just after menstruation) 2.
Management Strategies
For Menstruation-Related Angina
Pharmacologic:
- Nitrates plus β-blockers as first-line therapy 1
- Analgesics for pain control 1
- Hormonal therapy with low-dose combined oral contraceptives can be highly effective, allowing reduction of cardiac medications 2, 3
Important caveat: While hormonal therapy is effective for catamenial angina, contraceptives containing estrogen should be avoided in women with hereditary angioedema 8 and may increase thrombotic risk in women with other risk factors 9.
Non-pharmacologic:
- Exercise training
- Smoking cessation
- Weight loss
- Dietary modifications 1
For Thoracic Endometriosis
Combined approach:
- Video-assisted thoracoscopic surgery (VATS) for diagnosis and treatment 5
- Hormonal suppression with GnRH agonists followed by combined oral contraceptives 4
- Long-term hormonal maintenance to prevent recurrence 5
Critical Clinical Pitfalls
Dismissing cyclic chest pain as "atypical" or benign: The term "atypical" should not be used, as it can lead to misinterpretation and underdiagnosis 7. Instead, classify as cardiac, possibly cardiac, or noncardiac.
Failing to ask about menstrual timing: Without specifically inquiring about the relationship between symptoms and menses, the diagnosis will be missed 2, 3.
Timing of diagnostic procedures: Performing coronary angiography during asymptomatic phases may miss coronary spasm that only occurs during specific menstrual phases 2.
Assuming normal estrogen levels exclude hormonal involvement: Blood estrogen levels may be normal, but the hormonal fluctuation itself (not absolute levels) drives symptoms 2.
Overlooking the need for multidisciplinary care: Active collaboration with gynecology is essential for optimal management, particularly when hormonal therapy is considered 2.