Aim: To determine Incidence of Polycystic Ovarian Syndrome and its clinical presentation in a tertiary care Hospital. Study Design: A Cross sectional study.

Place and duration of study: The study was conducted in the Department of Obs. & Gynae, Avicenna Medical College and Hospital, Lahore for a period of six months, January 2020 to June 2020.

Methodology: A total of 753 patients attending the gynecological outpatient department were included in the study. Among these the women presenting with clinical picture of menstrual irregularities weight gain, hirsutism and subfertility were evaluated for diagnosis of PCOS. Radiological findings by pelvic U/S were confirmed.

Results: 169 women out of 753 patients were found to have PCOS. The incidence was thus 22.44%. Maximum number of women were overweight, BMI (25-29.9Kg/m2). 113(66.86%) presented with oligomennorrea followed by hirsutism and amenorrhea. 57.1% of married women with PCOD had subfertility.

Conclusion: Polycystic ovarian Syndrome is common in our population. It is more frequently seen in unmarried obese women. Menstrual irregularity is the most common clinical presentation. Ultrasound criteria is a valuable tool to diagnose the Polycystic Ovarian Disease.

Keywords: Polycystic 0varian Syndrome, oligomenorrhoea, amenorrhoea, hirsutism, obesity.