PCOS Is Now PMOS: Why This Common Hormonal Condition Has a New Name
Anyone who has ever searched for information about PCOS has probably come across terms like "cysts", "ovaries" and "fertility". But that is exactly where the problem lies: the previous name, Polycystic Ovary Syndrome (PCOS), only tells part of the story.
Following a years-long international consensus process, PCOS has officially been renamed PMOS. PMOS stands for Polyendocrine Metabolic Ovarian Syndrome and is intended to better reflect what this complex condition is really about.
Why Was PCOS Renamed?
The term "Polycystic Ovary Syndrome" has caused confusion for decades.
For one thing, many women with PCOS do not actually have cysts on their ovaries. In addition, the structures seen on ultrasound are usually not true cysts, but rather small, immature follicles. The condition also affects far more than the ovaries, influencing hormonal and metabolic processes throughout the body.
For years, experts have argued that the name fails to capture important aspects of the condition. The new term, PMOS, highlights that this is a complex hormonal and metabolic disorder.
What Does PMOS Mean?
The new name is based on three key characteristics of the condition:
Polyendocrine
Multiple hormone systems are involved, including insulin, androgens and various reproductive hormones.
Metabolic
Many women with PMOS experience metabolic changes. Insulin resistance is one of the most common features and may increase the long-term risk of type 2 diabetes and cardiovascular disease.
Ovarian
The ovaries still play an important role in the condition, which is why this part of the name remains.
How Common Is PMOS?
PMOS is one of the most common hormonal conditions affecting women of reproductive age.
Around one in eight women worldwide is affected, which represents more than 170 million women. At the same time, it is estimated that up to 70% of cases remain undiagnosed or are only diagnosed after many years.
Many women only receive a diagnosis after seeking medical advice for irregular cycles, fertility challenges or skin concerns.
What Symptoms Can PMOS Cause?
Symptoms can vary greatly from person to person. Not every woman experiences the same challenges.
Some of the most common signs include:
- Irregular or absent menstrual cycles
- Infrequent or absent ovulation
- Acne and blemish-prone skin
- Excess facial or body hair growth
- Thinning hair or hair loss
- Weight gain or difficulty losing weight
- Insulin resistance
- Fatigue and low energy levels
- Mood changes
- Difficulty conceiving
Many women also describe a feeling that "something isn't right", even when blood tests or individual examinations initially appear normal.
How Is PMOS Diagnosed?
There is no single test that can diagnose PMOS.
In most countries, healthcare professionals use the Rotterdam criteria. To receive a diagnosis, two out of the following three features must be present:
- Irregular or absent ovulation
- Elevated androgen levels or symptoms such as acne and excess hair growth
- Characteristic ovarian changes visible on ultrasound
At the same time, other possible causes must be ruled out.
A PMOS assessment often includes:
- Blood tests
- Hormone testing
- Blood sugar and insulin measurements
- Ultrasound examinations
- A detailed medical and cycle history
What Does the Name Change Mean for Women?
For now, the diagnosis and treatment of the condition remain the same.
The primary goal of the name change is to reduce misunderstandings and encourage a more holistic understanding of the condition. PMOS affects much more than the menstrual cycle or fertility. It can also influence metabolism, skin health, mental wellbeing and long-term health outcomes.
Many experts hope that the new name will help women receive earlier diagnoses and gain access to the support they need sooner.
Final Thoughts
PCOS is now called PMOS. While the new name may take some getting used to, it provides a much more accurate description of the condition.
PMOS is about far more than changes in the ovaries. It is a complex hormonal and metabolic disorder that can affect many areas of the body.
The better we understand what PMOS really is, the easier it becomes for women to recognise symptoms, seek support and make informed decisions about their health.