If you’ve recently heard the term PMOS instead of PCOS, you might be wondering what’s changed.
In 2026, Polycystic Ovary Syndrome (PCOS) was renamed Polyendocrine Metabolic Ovarian Syndrome (PMOS).
While the name has changed, the condition itself has not. The new name better reflects our understanding that PMOS is a complex hormonal and metabolic condition that affects much more than the ovaries.
Why was the name changed?
For many years, Polycystic Ovary Syndrome was recognised as a potentially misleading name.
Despite the previous name:
- PMOS is not defined by ovarian cysts.
- Ovarian changes are not required for diagnosis.
- The condition can affect hormonal, metabolic, reproductive and psychological health.
The new name, Polyendocrine Metabolic Ovarian Syndrome (PMOS), better reflects the complexity of the condition.
What does PMOS mean?
Each part of the new name highlights an important aspect of the condition.
Polyendocrine
Polyendocrine reflects that PMOS is a complex hormonal, or endocrine, condition that extends beyond the ovaries and can affect multiple aspects of health.
Metabolic
Metabolic recognises the important metabolic features of PMOS. Insulin resistance and long-term metabolic health are important considerations for many people living with the condition.
Ovarian
Ovarian recognises that ovarian function remains an important part of PMOS. Irregular ovulation, irregular periods and changes in ovarian morphology may occur, but these are part of a broader condition.
What are the symptoms of PMOS?
PMOS can look different for everyone. Common symptoms and features may include:
- Irregular or absent periods
- Irregular ovulation
- Acne or oily skin
- Increased facial or body hair
- Hair thinning on the scalp
- Weight changes
- Difficulty becoming pregnant
- Anxiety or low mood
Some women experience only a few symptoms, while others experience several.
Has the diagnosis changed?
The diagnostic criteria have not changed as part of the name change.
Healthcare professionals continue to consider factors such as ovulation, signs or levels of androgens and, where appropriate, ovarian morphology when making a diagnosis.
However, the new name is intended to improve understanding and recognition of PMOS by highlighting that it is a complex endocrine and metabolic condition, rather than one defined primarily by ovarian “cysts”.
For patients, the change is about more than a new acronym. It reflects a broader understanding of PMOS and encourages care that considers its reproductive, hormonal, metabolic and psychological impacts.
Managing PMOS
There is no one-size-fits-all approach to managing PMOS. Care depends on your symptoms, health goals and stage of life and may include:
- Medical care to manage symptoms and monitor your health.
- Nutrition support to support metabolic health, nutrition and overall wellbeing.
- Psychological support for mental health and the emotional impact of living with a long-term condition.
- Coordinated care involving multiple health professionals where appropriate.
How Rowie can help
At Rowie, we understand that PMOS is more than a reproductive condition.
Our women’s health psychologists and Accredited Practising Dietitians provide personalised, evidence-based care to support your nutrition, mental wellbeing and overall health while living with PMOS.
Disclaimer
This article is intended for general informational purposes only and should not replace individual medical advice. If you have concerns about your symptoms or health, speak with your GP or another qualified healthcare professional.