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Difficulty: EasyMenstrual Cycle Abnormalities and Contraception

A 19-year-old female university student visits the clinic seeking a reliable method of birth control. She reports that her menstrual periods have been unpredictable since menarche at age 13, often occurring every 3 to 4 months. She also notes worsening facial acne and excess dark hair on her upper lip. Her body mass index is 32 kg/m232 \text{ kg/m}^2. Blood pressure is 118/76 mmHg118/76 \text{ mmHg} and heart rate is 78/min78/\text{min}. A urine pregnancy test obtained in the clinic today is negative. During the interview, the patient mentions suffering from severe headaches that are consistently preceded by flashing lights and blind spots. The physician strongly suspects an underlying endocrinopathy but must first address her request for contraception and endometrial protection. Which of the following is the most appropriate next step in the management of this patient?

  1. Placement of a levonorgestrel-releasing intrauterine deviceAnswer
  2. B
    Prescription of an oral contraceptive pill containing ethinyl estradiol and drospirenone
  3. C
    Performance of an endometrial biopsy
  4. D
    Measurement of isolated serum free thyroxine
  5. E
    Prescription of oral doxycycline for management of facial acne

Answer

Placement of a levonorgestrel-releasing intrauterine device
The correct answer provides a highly effective contraceptive method that also offers endometrial protection against hyperplasia (a consequence of the unopposed estrogen environment in PCOS). Because the patient has migraines with aura (headaches with flashing lights/blind spots), any estrogen-containing contraceptive is strictly contraindicated due to an elevated risk of ischemic stroke. The levonorgestrel IUD provides progestin without estrogen, making it safe and appropriate for her.

Step-by-Step Solution

1
Identify the primary clinical needs of the patient.
The patient requires highly effective contraception and cycle regulation (endometrial protection) for suspected polycystic ovary syndrome (PCOS).
Addressing the patient's chief complaint while managing the long-term risk of endometrial hyperplasia due to unopposed estrogen.
2
Evaluate the patient's medical history for contraindications.
The patient has a history of severe headaches preceded by flashing lights and blind spots, which is diagnostic of migraines with aura.
Medical history directly dictates contraceptive eligibility.
3
Apply the WHO Medical Eligibility Criteria for contraceptive use.
Estrogen-containing contraceptives are absolutely contraindicated (Category 4) in patients with migraine with aura.
Estrogen use in these patients carries an unacceptably high risk of ischemic stroke.
4
Select the best alternative contraceptive method.
The levonorgestrel-releasing intrauterine device is chosen.
It is highly effective, safe for patients with migraines with aura, and provides local progestin to prevent endometrial hyperplasia.

Key Concept

Combined hormonal contraceptives (estrogen-containing) are absolutely contraindicated in women who experience migraines with aura due to a significantly increased risk of ischemic stroke. Progestin-only methods or non-hormonal methods are the appropriate choice.
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Topics

Menstrual Cycle Abnormalities and Contraception

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