**Question:** True about polycystic ovarian syndrome

A. It is a hormonal disorder affecting females of reproductive age group.
B. It is characterized by multiple small cysts on ovaries and hormonal imbalances.
C. PCOS is caused by genetic predisposition and environmental factors.
D. The primary symptom of PCOS is infertility.

**Correct Answer:** D. The primary symptom of PCOS is infertility.

**Core Concept:** Polycystic Ovarian Syndrome (PCOS) is a common endocrine disorder in women of reproductive age, affecting approximately 5-10% of women globally. It is characterized by hormonal imbalances leading to multiple small cysts on the ovaries, hence the term "polycystic ovaries". The disorder is multifactorial, involving both genetic predisposition and environmental factors.

**Why the Correct Answer is Right:** Infertility is a primary symptom of PCOS due to hormonal imbalances, specifically elevated luteinizing hormone (LH) to follicle-stimulating hormone (FSH) ratio. This imbalance disrupts the normal menstrual cycle, leading to irregular periods, and negatively impacts the chances of ovulation and pregnancy.

**Why Each Wrong Option is Incorrect:**

A. While hormonal imbalances are present in PCOS, infertility is not the primary symptom, as explained above. Instead, the primary symptoms include irregular menstrual cycles, hirsutism, and acne.

B. Although multiple small cysts on the ovaries are a characteristic feature of PCOS, infertility is the primary symptom, not multiple cysts.

C. While genetic predisposition and environmental factors contribute to PCOS development, the primary symptom is not the cause but the result of the disorder. The focus should be on the hormonal imbalances and their impacts on women's health.

**Clinical Pearls:**

1. PCOS is a complex condition involving multiple factors, including genetics and environmental influences, affecting reproductive and endocrine systems in women.
2. Clinical evaluation of PCOS patients should focus on assessing symptoms like irregular periods, hirsutism, acne, and infertility, rather than cysts or hormonal imbalances, which are secondary consequences of the disorder.
3. Early detection and management of PCOS can help improve fertility rates and prevent long-term complications, such as type 2 diabetes, hypertension, obesity, and cardiovascular diseases.