Polycystic ovary syndrome gets a new name: Why it matters

For years, many people diagnosed with polycystic ovary syndrome, commonly known as PCOS, have questioned whether the name ever truly reflected what they were experiencing.

Despite being one of the most common hormonal conditions affecting women of reproductive age, many patients diagnosed with PCOS do not actually have ovarian cysts, while symptoms often extend far beyond reproductive health.

Now, doctors and researchers are making a major change.

Polycystic ovary syndrome has officially been renamed polyendocrine metabolic ovarian syndrome (PMOS), a move experts say better reflects the condition’s wide-ranging hormonal and metabolic effects. The change was announced this week in a paper published in The Lancet following years of international consultation.

The condition affects an estimated 10 to 13 per cent of women of reproductive age globally, according to the World Health Organization, though it can also affect transgender people. Symptoms can include irregular periods, acne, excess body hair, fertility struggles and metabolic complications.

So why change the name?

Experts behind the move say “polycystic ovary syndrome” has long been misleading because many diagnosed patients never develop ovarian cysts at all. Instead, doctors increasingly recognise the condition as a broader hormonal and metabolic disorder linked to issues such as insulin resistance, type 2 diabetes and cardiovascular risks.

Professor Helena Teede, an endocrinologist who led the international effort behind the change, said the condition had effectively been placed “in the wrong box” for years because too much focus was placed on the ovaries rather than wider health effects.

The decision followed a global review involving dozens of medical organisations, researchers and patient groups, with thousands of healthcare professionals and patients consulted during the process.

Importantly, experts say the new name will not suddenly change diagnosis or treatment. Medical guidance remains the same for now, but doctors hope the shift will improve awareness, reduce stigma and encourage earlier diagnosis and more comprehensive care.

For many patients who have long felt misunderstood, the new name may represent more than a medical update. Doctors hope it marks a broader shift in how the condition itself is understood.