Which of the following is a feature of Polycystic Ovarian Syndrome?

Polycystic Ovarian Syndrome (PCOS) is characterized by a variety of clinical features, with oligomenorrhea being one of the most common manifestations. Oligomenorrhea refers to infrequent or irregular menstrual periods, which is a result of the hormonal imbalances present in PCOS. Many individuals with this condition experience disrupted ovulation, leading to irregular cycles, thus contributing to oligomenorrhea. This irregularity can stem from the interplay of factors such as elevated levels of androgens and insulin resistance that affect the normal menstrual cycle.

The other options represent features not typically associated with PCOS. For instance, increased fertility is often not a characteristic of PCOS due to the irregular ovulation that many patients experience. Regular menstrual cycles are contrary to what is generally seen in PCOS, where irregularity is common. Lastly, the absence of hirsutism does not align with typical presentations of PCOS, as hirsutism—excessive hair growth in areas typically seen in males—is a frequent sign due to elevated androgen levels. Therefore, oligomenorrhea stands out as a hallmark feature of Polycystic Ovarian Syndrome.