Evaluation and Management of Primary Amenorrhea

Initial Assessment and Referral Criteria

• A thorough history should focus on growth and development patterns, including nutritional status and exercise patterns, to identify potential causes of primary amenorrhea, according to the Journal of Clinical Oncology 1
• Physical examination should include height, weight, and BMI calculation to assess for signs of malnutrition or excessive exercise, as recommended by the British Journal of Sports Medicine 2
• Referral to pediatric endocrinology/gynecology is recommended for any patient who has no signs of puberty by 13 years of age, primary amenorrhea by 16 years of age, or failure of pubertal progression, as suggested by the Journal of Clinical Oncology 1

Laboratory Evaluation and Diagnostic Approach

• Initial laboratory tests should include FSH and LH levels to differentiate between hypothalamic, pituitary, and ovarian causes, and estradiol to assess ovarian function, as recommended by the Journal of Clinical Oncology 1

Imaging Studies and Special Considerations

• Pelvic ultrasound is recommended to assess uterine and ovarian anatomy, identify structural abnormalities, and evaluate endometrial thickness, as suggested by the Journal of the American College of Radiology 3
• Patients with hypothalamic amenorrhea should be evaluated for eating disorders and are at risk for decreased bone density, according to the British Journal of Sports Medicine 2
• Assess bone health in patients with prolonged hypoestrogenism, as they are at increased risk for osteoporosis, as recommended by the British Journal of Sports Medicine 2

Management Approach

• Management depends on the underlying cause but generally aims to promote normal pubertal development, as recommended by the Journal of Clinical Oncology 1