Polycystic Ovary Syndrome (PCOS)

Overview

Polycystic Ovary Syndrome (PCOS) is a common endocrine and metabolic condition that affects people of reproductive age with ovaries. It is typically characterized by a combination of irregular ovulation or absent ovulation, androgen excess (which may appear as acne, excess facial or body hair, or hair thinning), and polycystic ovarian morphology on ultrasound. Not every person with PCOS has ovarian cysts in the everyday sense, and the name can be misleading; the condition is better understood as a whole-body hormonal and metabolic syndrome rather than a problem limited to the ovaries alone.

PCOS is clinically important because it can affect menstrual regularity, fertility, skin health, weight regulation, insulin function, and long-term cardiometabolic risk. Research suggests it is one of the most common hormonal disorders in reproductive-age women, though exact prevalence varies depending on the diagnostic criteria used. Many individuals also experience insulin resistance, higher rates of prediabetes and type 2 diabetes, dyslipidemia, sleep apnea, and potential impacts on mental health, including anxiety, depression, and body-image distress. The condition often presents differently across the lifespan and across body sizes, ethnic backgrounds, and symptom patterns.

Diagnosis is generally based on recognized criteria such as the Rotterdam criteria, which consider the presence of at least two of the following: ovulatory dysfunction, clinical or biochemical hyperandrogenism, and polycystic-appearing ovaries on ultrasound, after excluding other causes. PCOS is considered a diagnosis of exclusion, meaning clinicians typically evaluate for overlapping conditions such as thyroid disorders, hyperprolactinemia, congenital adrenal hyperplasia, Cushing syndrome, or androgen-secreting tumors. This diagnostic complexity helps explain why many people experience delays in identification or are initially told that symptoms are unrelated.

From a broader health perspective, PCOS is increasingly recognized as a condition shaped by interactions among genetics, insulin signaling, ovarian hormone regulation, inflammation, and environmental factors. Conventional medicine tends to emphasize endocrine and metabolic pathways, while traditional systems may interpret PCOS through patterns of imbalance involving digestion, circulation, stress, reproductive energy, or constitutional tendencies. Because symptoms and health priorities can vary widely, PCOS is often discussed as a heterogeneous syndrome rather than a single uniform disease entity.