What is the most common symptom of polycystic ovary syndrome (PCOS)?

• A. Weight gain
• B. Irregular menstrual cycles
• C. Addison's disease
• D. Menorrhagia

Answer: (B)

The most common symptom of polycystic ovary syndrome (PCOS) is irregular menstrual cycles. In women with PCOS, hormonal imbalances disrupt the regularity of the menstrual cycle, leading to infrequent, irregular, or prolonged menstrual periods. This disruption is often due to elevated levels of androgens (male hormones) and insulin resistance, which are characteristic features of the syndrome.

Irregular menstrual cycles may manifest as missed periods, cycles that are significantly longer than the typical 28-day cycle, or excessive bleeding during menses. These menstrual irregularities can lead to further complications such as anovulation, infertility, and increased risk of endometrial hyperplasia.

Other symptoms of PCOS can include weight gain, hirsutism, acne, and thinning hair, but irregular menstrual cycles are typically the most noticeable and common presentation that leads women to seek medical evaluation. Weight gain, while common, is not universally present, and conditions like Addison's disease and menorrhagia are not typical symptoms associated with PCOS. Recognizing irregular menstrual cycles as a key symptom is crucial in diagnosing and managing PCOS effectively.