What are the recommended guidelines for diagnosing and managing polycystic ovary syndrome (PCOS) in women?

Guidelines for Diagnosing and Managing PCOS

Use the Rotterdam criteria for diagnosis in adults: presence of any two of the following—hyperandrogenism (clinical or biochemical), ovulatory dysfunction, or polycystic ovaries—after excluding other androgen-excess disorders. 1, 2, 3

Diagnostic Criteria

Adults

• Require 2 of 3 features: 2, 3, 4

  • Hyperandrogenism (clinical signs like hirsutism/acne OR elevated androgens)
  • Ovulatory dysfunction (irregular menstrual cycles)
  • Polycystic ovarian morphology on ultrasound OR elevated anti-Müllerian hormone (AMH) levels 2, 3

• Key refinement: AMH can now substitute for pelvic ultrasound in adults only, simplifying diagnosis and avoiding invasive imaging in some cases 2, 3

Adolescents

• Diagnosis requires BOTH: 5

  • Irregular menstrual cycles (defined by time postmenarche)
  • Clinical or biochemical hyperandrogenism

• Critical caveat: Do NOT use polycystic ovarian morphology on ultrasound or AMH levels for diagnosis in adolescents—these are normal developmental findings in this age group 5

• Adolescents with only one feature are considered "at risk" and require symptom management plus ongoing monitoring 5

Exclusion Testing

• Rule out other causes of androgen excess: congenital adrenal hyperplasia, Cushing syndrome, androgen-secreting tumors, thyroid dysfunction, and hyperprolactinemia 4, 6

First-Line Management: Lifestyle Intervention

Initiate multicomponent lifestyle programs combining diet, exercise, and behavioral strategies for ALL women with PCOS regardless of weight, before or concurrent with any medication. 1

Exercise Prescription

• Weight maintenance: ≥150 minutes/week moderate-intensity OR ≥75 minutes/week vigorous activity, plus resistance training twice weekly 1
• Weight loss: ≥300 minutes/week moderate-intensity OR ≥150 minutes/week vigorous activity 1
• Target heart rate during aerobic sessions: 70–90% of age-predicted maximum (220 minus age) 1

Dietary Approach

• Emphasize low-glycemic-index foods, high fiber, omega-3 fatty acids, Mediterranean-style patterns, and anti-inflammatory foods—no single diet is superior 1, 7
• Reduce sugar-sweetened beverages and fruit juices 1
• Focus on portion-size control 1

Weight Management Rationale

• Women with PCOS gain weight faster than unaffected peers, with acceleration beginning in adolescence 1
• Even 5–10% weight loss improves reproductive function, metabolic parameters, and psychological wellbeing 1
• Obesity worsens all PCOS manifestations including insulin resistance, hyperandrogenism, and psychological comorbidities 1
• Monitor body weight and waist circumference regularly 1

Pharmacologic Management

For Menstrual Irregularity and Hyperandrogenism (Non-Fertility Goals)

Combined oral contraceptive pills (COCPs) are first-line pharmacologic therapy for regulating menstrual cycles and treating hirsutism/acne in women not seeking pregnancy. 1, 4

• COCPs provide endometrial protection against hyperplasia/cancer risk from chronic anovulation 1
• In adolescents, use low-dose preparations 5

For Metabolic Features

• Metformin improves metabolic/glycemic abnormalities and menstrual irregularities 6, 5
• Metformin has limited or no benefit for hirsutism, acne, or infertility 6
• Consider metformin in adolescents for metabolic features and cycle regulation 5

For Infertility

• Clomiphene remains first-line therapy for ovulation induction 6
• The 2023 guideline emphasizes cheaper and safer fertility management approaches 3

Medications with Unfavorable Risk-Benefit

• Thiazolidinediones have an unfavorable risk-benefit ratio overall 6
• Statins require further study 6

Comprehensive Screening and Long-Term Management

Psychological Health

Systematically screen all women with PCOS for depression, anxiety, eating disorders, body-image concerns, and low self-esteem. 1

• Address weight stigma sensitively during clinical encounters 1
• Mental health disorders are highly prevalent and may be linked to gut dysbiosis 8

Metabolic and Cardiovascular Screening

• Screen for risk factors for diabetes, cardiovascular disease, and metabolic syndrome 3, 4
• PCOS is now recognized as a cardiovascular disease risk-enhancing factor with elevated risk of myocardial infarction and stroke even during reproductive years 8
• Evaluate for obstructive sleep apnea 3

Endometrial Protection

• Assess risk factors for endometrial cancer, particularly in women with chronic anovulation 4, 6

Pregnancy Considerations

• Women with PCOS have high risk of adverse pregnancy outcomes requiring appropriate counseling and monitoring 3

Special Populations

Postmenopausal Women

• No consistent PCOS phenotype exists in postmenopausal women, making diagnosis problematic 6
• Focus on managing established metabolic and cardiovascular comorbidities 3

Transition Planning for Adolescents

• Establish lifelong health planning including healthy lifestyles, metabolic screening, and transition to adult care 5
• Use shared decision-making throughout management 5

Common Pitfalls to Avoid

• Do not use ultrasound or AMH for diagnosis in adolescents—these lead to overdiagnosis 5
• Do not delay lifestyle intervention while initiating medications—they should be concurrent 1
• Do not overlook psychological screening—depression and anxiety are as important as metabolic features 1, 3
• Do not minimize the importance of weight stigma—explain health risks while avoiding stigmatizing language 1, 5