Gynaecology · May 2026
PCOS Is Now Called PMOS — Here Is Everything You Need to Know
The name that millions of women have lived with for decades has officially changed. One letter is different. But the meaning behind that change is far bigger than it looks.
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170M+ Women affected worldwide |
14 Years Global consensus process |
22,000+ Patients & professionals consulted |
56 Global organisations involved |
“Polycystic ovary syndrome has long been a confusing and misleading diagnosis for women — it has not properly described this underdiagnosed medical condition.”
— Dr. Sherry Ross, Board-Certified OB-GYN
What Changed — and What Did Not
On 12 May 2026, a landmark paper published in The Lancet and presented at the European Congress of Endocrinology in Prague officially renamed Polycystic Ovary Syndrome (PCOS) to Polyendocrine Metabolic Ovarian Syndrome (PMOS). The decision followed a 14-year global consensus process led by researchers at Monash University, with input from over 22,000 patients and health professionals across six continents, backed by 56 patient and professional organisations including the Endocrine Society.
One letter changed in the acronym — C became M. But what that single letter represents is a complete shift in how the medical world understands, communicates and treats this condition.
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Old Name — Until 2026 PCOS Polycystic Ovary Syndrome Implied the condition was defined by cysts on the ovaries — which was factually inaccurate and contributed to widespread missed diagnoses for decades. |
New Name — From May 2026 PMOS Polyendocrine Metabolic Ovarian Syndrome Accurately reflects that this is a hormonal and metabolic condition affecting multiple systems — not just the ovaries. |
Why the Old Name Was a Problem
The name PCOS dates back to 1935, when two Chicago surgeons described what they believed were cysts on the ovaries of women with this condition. Decades of medical progress later, we know those were not pathological cysts at all. They were small, immature ovarian follicles that had simply stopped developing — not cysts, not surgically significant, and not even present in every woman with the condition.
Despite this, the name stuck. And the consequences were serious and widespread.
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Missed Diagnoses Many women were told they did not have PCOS simply because no cysts were visible on ultrasound — even when they had every other symptom of the condition. This sent patients from doctor to doctor for years without answers. |
Fragmented Care Because the name pointed to the ovaries, treatment was often limited to reproductive symptoms — periods, fertility — while the metabolic side of the condition went almost entirely unaddressed. |
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Metabolic Health Ignored Insulin resistance is present in the majority of PMOS patients — including many who are not overweight. Yet metabolic screening for diabetes risk and cardiovascular disease was consistently underperformed because the name gave no indication these risks existed. |
Stigma and Confusion Women were left trying to make sense of a condition named after something they may not have had. This confusion increased anxiety, delayed help-seeking, and reduced confidence in the diagnosis itself. |
How the Name Change Happened
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1935
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Two Chicago surgeons describe what they call ovarian “cysts” in women with irregular periods and hormonal symptoms. The condition gradually becomes known as Polycystic Ovary Syndrome — a name that would stand, largely unchallenged, for nearly 90 years. |
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Early 2010s
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Professor Helena Teede at Monash University begins a formal, structured global consultation. Having spent decades researching this condition and seeing its impact firsthand on patients, she recognised that the name no longer reflected the science — or the lived experience of women with the condition. |
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2012–2025
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Over 22,000 patients and healthcare professionals across six continents are surveyed and consulted. The findings are clear: 86% of patients and 71% of health professionals actively support a new, more accurate name. The primary reasons given — removing stigma, improving clinical communication and better reflecting the true biology of the condition. |
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12 May 2026
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The Global Name Change Consortium — comprising 56 international patient and professional organisations including the Endocrine Society — publishes the consensus paper in The Lancet and presents it at the European Congress of Endocrinology in Prague. PCOS officially becomes PMOS. |
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2026–2029
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A formal three-year transition period begins. Both PCOS and PMOS will be used interchangeably while medical records, clinical guidelines, educational materials and international disease classification systems are updated globally. |
What Exactly Is PMOS?
PMOS — Polyendocrine Metabolic Ovarian Syndrome — is a complex, long-term hormonal condition that affects 1 in 8 women globally. Over 170 million women are living with it right now. It is not a straightforward gynaecological disorder. It is a multisystem condition that simultaneously affects the endocrine system, the metabolic system, reproductive health, skin, cardiovascular health and mental wellbeing.
At its core, PMOS involves fluctuating hormone levels — particularly elevated androgens, often referred to as male hormones — that disrupt multiple processes across the body. The condition looks different in every woman, which is part of why it has historically been so difficult to diagnose and treat consistently.
Symptoms of PMOS
No two women with PMOS present in exactly the same way. Symptoms can range from mild and manageable to severe and life-altering. The most commonly reported include:
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Irregular or Absent Periods Unpredictable cycles, very infrequent periods or periods that are extremely heavy when they do occur. This is often the first and most noticeable sign. |
Weight Gain and Difficulty Losing Weight Particularly concentrated around the abdomen, and often resistant to standard diet and exercise efforts due to the underlying insulin resistance. |
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Excess Facial or Body Hair Caused by elevated androgen levels. Unwanted hair growth on the face, chest, stomach or back is a distressing symptom for many women with PMOS. |
Hair Thinning on the Scalp Androgenic alopecia — scalp hair thinning or loss — affects a significant number of women with PMOS and has a considerable psychological impact. |
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Hormonal Acne Persistent acne on the face, chest or back — often unresponsive to standard skincare because it is driven by hormonal imbalance rather than external factors. |
Fertility Challenges PMOS disrupts ovulation, making it one of the leading causes of difficulty conceiving. Many women first discover they have the condition when they begin trying for a baby. |
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Insulin Resistance Present in the majority of PMOS patients — including many who are not overweight. Left unmanaged, insulin resistance significantly increases the risk of Type 2 diabetes and cardiovascular disease. |
Fatigue and Mood Disturbances Persistent tiredness, low mood, anxiety and difficulty concentrating are commonly reported by women with PMOS — symptoms that are often overlooked or attributed to other causes. |
It is important to note that a woman does not need to have all of these symptoms to be diagnosed with PMOS. Even two or three can be sufficient for a formal diagnosis under the Rotterdam Criteria.
Questions You Are Probably Asking Right Now
If I was diagnosed with PCOS, do I need to see my doctor again because of this name change?
No. Your diagnosis has not changed. PCOS and PMOS refer to the exact same condition — the name is what changed, not the biology, not the diagnostic criteria, and not your medical history. A previous PCOS diagnosis carries forward as PMOS automatically. You do not need new tests, a new workup or a new consultation simply because of the renaming.
Will my treatment change?
Not immediately. Treatment protocols and diagnostic criteria remain the same. However, the expectation — and the hope — is that by renaming the condition to reflect its metabolic nature, doctors will now approach care more comprehensively. That means not just managing periods and fertility, but actively screening for insulin resistance, blood sugar levels and cardiovascular risk as well. It is worth having this conversation with your doctor.
Can I still get pregnant if I have PMOS?
Yes — and many women with PMOS do conceive successfully. The condition disrupts ovulation, which makes natural conception more challenging, but it does not make pregnancy impossible. With early diagnosis, appropriate lifestyle changes and targeted medical treatment — including ovulation induction where needed — fertility outcomes can improve significantly. Speaking to a gynaecologist or fertility specialist early is key.
Can I still use the term PCOS?
Yes. There is a formal three-year transition period from 2026 to 2029 during which both PCOS and PMOS will be used interchangeably. Medical records, lab reports, patient materials and clinical guidelines will all reference both terms during this time. PMOS will gradually become the standard, but PCOS will remain widely understood for years to come.
How is PMOS diagnosed?
Diagnosis follows the Rotterdam Criteria. A woman is diagnosed with PMOS if she meets at least two of the following three criteria: irregular or absent menstrual periods; elevated androgen levels in blood tests; or polycystic-appearing ovaries on ultrasound. A doctor will also typically check blood pressure, hormone panels and may arrange metabolic screening. Importantly — the absence of visible follicles on ultrasound does not rule out a PMOS diagnosis.
Is there a cure for PMOS?
There is currently no single cure, but PMOS is very manageable with the right approach. Lifestyle changes — particularly nutrition, structured exercise and weight management — form the cornerstone of care and can significantly improve hormone balance and symptom control. Medications may include Metformin for insulin resistance, hormonal treatments to regulate cycles, and condition-specific therapies for symptoms such as acne or excess hair growth. Early intervention is critical — it can slow the progression of symptoms and reduce the risk of long-term complications including Type 2 diabetes and heart disease.
What This Means for Women in India
India has one of the highest prevalences of this condition anywhere in the world. Studies estimate that between 9 and 22 percent of Indian women of reproductive age are affected — a range that itself reflects just how inconsistently the condition has been diagnosed. Underdiagnosis, delayed diagnosis and symptom-focused treatment without metabolic screening remain widespread.
The renaming to PMOS is an opportunity for Indian women to walk into a doctor’s appointment with better information, ask the right questions and expect a more complete standard of care. It is also an opportunity for clinicians across the country to revisit how they assess and manage this condition — not just reproductively, but as the complex, lifelong, multisystem condition it has always been.
Quinek Life Sciences
Supporting Women With PMOS — From Diagnosis to Long-Term Care
At Quinek Life Sciences, women’s hormonal health has always been a core area of focus. Our WHO-GMP, GLP and ISO certified formulations are developed with the biological complexity of conditions like PMOS in mind — addressing hormonal balance, menstrual regularity, fertility support and metabolic wellbeing through evidence-based, clinician-trusted medicines.
As the global medical community transitions from PCOS to PMOS, our commitment to developing and delivering quality medicines for women’s health remains exactly what it has always been. We work closely with gynaecologists and endocrinologists across India to ensure women receive comprehensive, integrated care — not just symptom management.
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PCOS is now PMOS. The condition itself has not changed. The treatments have not changed. What has changed is the understanding — and with that understanding comes a responsibility: better, more complete, more honest care for millions of women who have spent years being told their condition was about something it never really was.
If you have been living with this condition — or suspect you might — this is a good moment to revisit your care with your doctor. Ask about metabolic screening. Ask about insulin resistance. Ask whether every dimension of your health is being looked at, not just the reproductive ones.
A name that finally reflects the full reality of a condition is also a name that demands full, comprehensive care in return.
Medical Disclaimer: This article is for educational and informational purposes only and does not constitute medical advice. If you have been diagnosed with PCOS/PMOS or are experiencing symptoms, please consult a qualified gynaecologist or endocrinologist for personalised guidance.
Sources: The Lancet (May 2026) · Endocrine Society · Monash University · European Congress of Endocrinology · AJMC · Healthline · Medical News Today
