What is a common presentation in patients suffering from polycystic ovary syndrome?

Polycystic ovary syndrome (PCOS) is characterized by hormonal imbalances that often lead to a range of symptoms, among which amenorrhea (absence of menstruation) and irregular periods are very common. This occurs due to disrupted ovarian function, which can result in anovulation, meaning that ovulation does not happen regularly or at all. As a consequence, women with PCOS frequently experience irregular menstrual cycles or amenorrhea.

The other options are not typical presentations of PCOS. Regular menstrual cycles are uncommon in these patients due to the effects of hormonal imbalance. Weight loss is often a goal for managing PCOS, as many women are overweight or obese, but it is not a common presentation of the condition itself; in fact, many individuals with PCOS experience weight gain. Increased fertility is not typical either, as the anovulation seen in PCOS usually leads to difficulties in conception. Thus, the presentation of amenorrhea or irregular periods aligns perfectly with the characteristics of PCOS.