Why PCOS is now called PMOS

You may start hearing a new term for a condition you already know: PMOS.

PMOS stands for polyendocrine metabolic ovarian syndrome. It’s the new name for what’s long been called PCOS, or polycystic ovary syndrome, which affects 1 in 8 women of reproductive age. While the name is changing, the condition itself is not. The new name was chosen through a global effort involving 56 medical and patient organizations, input from more than 14,000 people with the condition, and healthcare professionals worldwide.

This update reflects what researchers and clinicians now understand more clearly — that this condition affects more than cysts on the ovaries. It involves hormones, metabolism and overall health. 

What is PCOS?

PCOS has traditionally been described as a hormonal condition that can affect ovulation and menstrual cycles.

Common signs may include:

• Irregular or missed periods
• Higher levels of androgens, sometimes called “male-type hormones”
• Absent or rare ovulation

Some people may notice acne and excess hair growth. Fertility can also be compromised, but can often be treated with medications to help the woman ovulate. The condition is also closely linked to how the body processes insulin, which can affect metabolism and weight. Symptoms can vary widely from person to person. 

What is PMOS?

PMOS — polyendocrine metabolic ovarian syndrome — is the updated name for PCOS.

Each part of the name reflects a broader understanding:

• Polyendocrine: Multiple hormone systems are involved
• Metabolic: The body’s energy use, including insulin, plays a role
• Ovarian: The ovaries are still part of the condition, but not the only focus

This shift helps describe the condition as a whole-body health issue, not just a reproductive one. 

Why the name changed

The term “polycystic ovary syndrome” has been used for decades, but it hasn’t always been accurate.

For example:

• Many people with the condition don’t have ovarian cysts— what were called 'cysts' are really small fluid-filled follicles, and having a certain number of those are a normal part of ovarian function.
• The old name could also carry stigma, making some people feel embarrassed or misunderstood
• The name focuses on ovaries, even though other systems are involved
• It can lead to confusion or delayed diagnosis
• It can lead to undertreating the other potentially serious aspects of the condition

The new name aims to better reflect what’s actually happening in the body — a mix of hormonal and metabolic factors. 

What this means for diagnosis and care

For now, most aspects of care stay the same.

• Diagnostic criteria have not changed
• Treatment approaches remain similar
• Providers may still use both PCOS and PMOS during the transition

Over time, the updated name may support a more complete view of care — one that looks beyond reproductive health to include metabolic and long-term wellness.

What it means for you

If you’ve been diagnosed with PCOS, you don’t need a new diagnosis.

You may simply start to see or hear the term PMOS more often.

The shift may help:

• Make symptoms easier to understand
• Encourage more whole-person care
• Support earlier recognition of the condition

If you have questions about your symptoms or care plan, it can help to talk with your healthcare provider.

Why this change matters

A name shapes how a condition is understood. By moving away from a narrow focus on ovaries and cysts, PMOS may:

• Reduce confusion
• Improve awareness
• Encourage more comprehensive care

A clearer name may also help attract more research funding and attention to this common but historically under-studied condition. It’s a small change in wording — but it may lead to a broader view of health.

What hasn't changed

If you've been diagnosed with PCOS, here's what stays the same:

• Your diagnosis still stands. You don’t need to be re-evaluated or re-diagnosed.
• Your treatment plan stays the same. Any medications, lifestyle recommendations or monitoring your provider has recommended still apply.
• Your insurance coverage is not affected. Medical billing codes are being updated to reflect the new name, but this does not change your benefits or coverage.
• Your provider is still your best resource. Whether they say PCOS or PMOS, they are talking about the same condition — and your care continues as before.

The only thing changing is the name — to better reflect what this condition truly involves.