The formal term of polycystic ovarian syndrome (PCOS) was changed to polyendocrine metabolic ovarian syndrome (PMOS) on Monday, May 12, 2026, according to a health policy paper published in The LancetTrusted Source by an international group of experts known as the Global term Change Consortium.
In the past, the presence of fluid-filled cysts on an individual’s ovaries was used by medical professionals to identify what was then known as PCOS.
Due to hormonal imbalances, this disorder is also marked by irregular periods and odd hair growth.
The worldwide expert panel is now attempting to highlight the actual systemic significance of this disorder by changing the name of the condition to emphasize its metabolic consequences rather than the existence of ovarian cysts and by implementing the changes in health policy described in the Lancet study.
An intricate endocrine disorder rather than only ovarian cysts
The transition from PCOS to PMOS required at least 14 years of interdisciplinary expert consultations and surveys with 14,360 individuals who had been diagnosed.
Over the course of a three-year transition period, the new name will be embraced worldwide; analysts predict that this process will be finished in 2028.
By changing the name, experts recognize that this disorder of the reproductive system affects more than just the reproductive organs; it can also affect hormone production, weight, a person’s skin, their metabolic health, and their mental health. It does not always manifest as expected, that is, it does not always involve the formation of ovarian cysts.
Helena Teede, FRCOG, FRANZCOG, MBBS, PhD, Director of the Monash Centre for Health Research & Implementation at Monash University in Australia, one of the key experts involved in the name-change process, stated in a press release, “What we now know is that there is actually no increase in abnormal cysts on the ovary, and the diverse features of the condition were often unappreciated.”
Sameena Rahman, MD, a board-certified ob-gyn, sex-med gynecologist, and menopausal expert who was not on the name-change panel, expressed her excitement about the shift in an interview with Medical News Today.
Rahman told us, “This name change has been in the planning for a long time.” “The former nomenclature, PCOS, was both incorrect and incomplete because it focused primarily on ovarian cysts, which are not present in every.
A step toward improved treatment and quicker diagnosis
By emphasizing that PMOS is a complicated medical condition, the specialists in charge of the term change hope to reduce future delays in diagnosis and provide more individualized therapy.
Due to the intricacy of the symptoms, which frequently results in incorrect or conflicting diagnoses from various medical providers, historical data indicates that many people did not acquire a diagnosis for their disease until they sought reproductive treatment.
Teede wrote in the news release, “It was heartbreaking to see the delayed diagnosis, limited knowledge, and poor care offered to those affected by this neglected ailment.”