PCOS renamed PMOS to better reflect metabolic disorder nature

A major shift in medical terminology has been announced for Polycystic Ovarian Syndrome (PCOS), a common hormonal disorder affecting millions of women worldwide, including a significant proportion in Pakistan. The condition has now been renamed Polyendocrine Metabolic Ovarian Syndrome (PMOS) in an effort to better reflect its underlying biological complexity.

The change was published in The Lancet medical journal and formally announced at the European Congress of Endocrinology in Prague after 14 years of international collaboration involving medical societies and patient advocacy groups.

Researchers say the previous name, PCOS, has long been misleading because it suggests a primarily ovarian disorder characterised by cysts. In reality, studies show that the condition is driven by broader endocrine dysfunction involving insulin regulation, androgen imbalance, and neuroendocrine disruptions. Experts note that true ovarian cysts are not necessarily a defining feature of the syndrome.

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Medical specialists have also warned that the outdated terminology has contributed to delayed diagnosis and widespread misunderstanding. It is estimated that up to 70 per cent of affected individuals remain undiagnosed globally, partly due to confusion surrounding the condition’s name and symptoms.

Professor Helena Teede, who led the renaming initiative, said the old terminology failed to capture the multi-system impact of the disorder. According to her, the condition affects not only reproductive health but also metabolism, significantly increasing risks of diabetes, obesity, and cardiovascular disease.

The new term PMOS is intended to improve clinical awareness and encourage a more comprehensive approach to diagnosis and treatment. Experts believe the updated name will help shift medical focus from a single-organ perspective to a broader metabolic and hormonal framework.

Health professionals hope the change will also improve patient understanding and reduce stigma, while encouraging earlier detection and more effective management strategies for those affected by the condition.