Women's health: The PMOS neuro-endocrine rebrand

What exactly is PMOS and why does the name matter?

Published on the 04 September 2026 by Madeline Kahl

Madeline Kahl

One of the most celebrated moments of Women’s health this year was the name change from Polycystic ovary syndrome (PCOS) to Polyendocrine metabolic ovarian syndrome (PMOS). But what does this mean? And why does it matter?

Firstly, what exactly is, or was, PCOS?

Polycystic ovary syndrome (PCOS) is a hormonal and metabolic condition that affects an estimated 10–13% of reproductive-aged women. Colloquially known as ‘diabetes in the ovaries,’ PCOS is characterised by fluctuations in hormones, with impacts on weight, metabolic and mental health, skin and the reproductive system. While it is manageable with lifestyle changes and medication, ignoring it can lead to major long-term health risks, some of which were previously unidentifiable.

What does the name change of PCOS to PMOS mean?

In May 2026, PCOS was officially renamed polyendocrine metabolic ovarian syndrome (PMOS). A global campaign launched by Monash’s Professor Helena Teede: the central point of the PCOS rename was that, rather than focusing on ‘polycystic’, it is ‘polyendocrine.’

To break down this change:

Polyendocrine: has shifted from polycystic (focusing on cysts in ovarian follicles) to polyendocrine, meaning multiple hormones.
Metabolic: the largest change in the renaming, as metabolic now encompasses all the increased risk of health conditions, like type 2 diabetes and cardiovascular disease.
Ovarian: still stands for ovarian, accounting for the immature follicles in the ovaries.
Syndrome: is for syndrome directly impacting women’s physical and mental health.

Why is the name change significant?

The significance of the name change lies in the M part of PMOS.

It reshapes the diagnostic focus from ovarian symptoms to the neuro-endocrine nature of the condition. Metabolic reflects the increased risks of metabolic conditions such as type 2 diabetes and cardiovascular conditions.

The renaming prevents delayed diagnosis, increases targeted care, improves research into the syndrome, and increases patients' awareness of the condition's impact on day-to-day quality of life, rather than the typical PCOS understanding that it only affects fertility.

What PMOS symptoms to look out for

PMOS symptoms stem from genetic, environmental and behavioural factors. All of which influence hormones and ovarian changes.

Symptoms include:

Irregular periods (outside of the menstrual cycle range of 21-35 days)
Acne
Excess body hair
Scalp hair loss
Weight management
Skin conditions
Anxiety and depression
Family history

Your local GP will check for these by reviewing your medical history, doing a physical examination and organising some basic blood tests.

Find out more

The UNSW Health Service is here for support on women’s health and diagnostic inquiries. You can book an appointment online or call 02 9385 5425 to speak to a GP.

Get UNSW Health Service support

Learn more about PMOS