PCOS has a new name—but will it change the way patients are treated?

As of May 2026, polycystic ovary syndrome (PCOS) is officially being renamed polyendocrine metabolic ovarian syndrome (PMOS). But why the change—and what does it actually mean for people living with the condition?

We spoke to Eve Lepage, MSN, RN, about why many experts felt the old name no longer reflected the science, how PMOS shifts the conversation beyond fertility, and why the change could help improve awareness and care.

Key takeaways:

• PCOS is being renamed PMOS (polyendocrine metabolic ovarian syndrome) to better reflect that the condition affects hormones, metabolism, and overall health—not just the ovaries

• The term “polycystic ovaries” has long been misleading because the “cysts” seen on ultrasound are usually immature follicles, not true ovarian cysts

• PMOS symptoms can include irregular periods, acne, excess hair growth, insulin resistance, fatigue, anxiety, depression, and fertility challenges—but symptoms vary widely from person to person

• Experts hope the new name will improve awareness, reduce stigma, and potentially lead to earlier diagnosis and more comprehensive care for people with the condition

1. Why has PCOS been renamed to PMOS?

The short answer is that experts felt the term polycystic ovary syndrome no longer accurately reflected the condition.

The new name, polyendocrine metabolic ovarian syndrome (PMOS), is meant to better capture the fact that this is a complex hormonal and metabolic condition, and not simply an ovarian or fertility disorder. 

Over the years, research has shown that PCOS can affect many systems throughout the body, including metabolism, cardiovascular health, skin, sleep, and mental health. But the old terminology focused heavily on the ovaries, which unintentionally narrowed how people understood the condition.

For many patients, fertility isn’t even the symptom that impacts their daily life the most.

Wait—are the “cysts” in PCOS not actually cysts?

Not exactly. 

One of the biggest misconceptions about PCOS is built into the name itself. What clinicians often see on ultrasound aren’t true ovarian cysts, but immature ovarian follicles, small sacs containing eggs that haven’t fully developed or been released during ovulation. 

And importantly, you don't even need to have these “cysts” to be diagnosed with PCOS.

Under the current diagnostic criteria, someone can still receive a diagnosis based on symptoms like irregular ovulation and elevated androgens (hormones like testosterone that can contribute to symptoms such as acne or excess facial hair), even if their ovaries appear completely normal on ultrasound. 

At the same time, many people without PCOS can have ovaries that look “polycystic” on ultrasound. 

Many experts believe this confusion has also contributed to delayed diagnosis and misunderstanding of the condition.

2. Why do experts think the change from PCOS to PMOS matters?

Names in medicine matter more than people often realize. They shape how conditions are understood, researched, diagnosed, treated, and even how seriously they’re taken.

Many people living with PCOS felt the old name didn’t reflect their lived experience. Some didn’t have ovaries that appeared “polycystic” on ultrasound. Others felt the condition was framed too narrowly around fertility, when their biggest challenges related to mental health, metabolism, fatigue, or other whole-body symptoms.

The shift to PMOS also signals a broader change in medicine: moving away from reducing women’s health conditions to reproductive function alone, and toward understanding how interconnected these systems really are.

3. Could the new name lead to earlier diagnosis?

Potentially, yes. 

Many people associate PCOS primarily with ovarian cysts or fertility problems, even though the condition can present in many different ways. The hope is that PMOS will broaden public and clinical understanding of the condition and help people recognize symptoms they may not previously have connected to it, whether that’s irregular cycles, insulin resistance, weight changes, or mental health challenges like anxiety and depression.

Clue’s own survey data reflects how broad the experience can be.

3 in 4 respondents with a PCOS diagnosis identified emotional symptoms or fatigue among their most concerning health challenges, highlighting how commonly these experiences coexist alongside the condition.

At the same time, a name change alone won’t solve the deeper issues around delayed diagnosis. Better clinician education, more research funding, and improved awareness are still critically needed.

But importantly, many experts, myself included, strongly believe the benefits outweigh the drawbacks if the new terminology leads to earlier diagnosis, better understanding, and more comprehensive care. 

4. Why is PCOS/PMOS still so poorly understood?

One reason is that the condition can look very different from person to person.

Some people mainly experience irregular periods or fertility challenges, while others are more affected by metabolic symptoms, skin changes, fatigue, or mental health challenges. That variability can make the condition both harder to diagnose and easier to misunderstand.

Historically, women’s health research has also been significantly underfunded. That research gap has limited our understanding of how PMOS intersects with areas like cardiovascular health, metabolism, mental health, ADHD, and endometriosis.

Clue’s survey data reflects just how interconnected these experiences can be: respondents with a PCOS diagnosis reported high rates of overlapping conditions, including anxiety disorders, depression, ADHD, IBS, and endometriosis.

There’s also a broader issue in medicine where symptoms that predominantly affect women are more likely to be minimized, dismissed, or fragmented across specialties. Many patients spend years moving between dermatologists, gynecologists, endocrinologists, and mental health professionals before anyone connects the dots.

5. What are the signs or symptoms of PCOS/PMOS?

PCOS/PMOS can present in many different ways, which is one reason diagnosis is often delayed. 

Symptoms of PMOS/PCOS can include:

• Irregular or absent periods

• Difficulty getting pregnant due to irregular ovulation or no ovulation

• Excess facial or body hair

• Acne or oily skin

• Hair thinning on the scalp

• Weight gain or difficulty managing weight

• Fatigue

• Insulin resistance or difficulty regulating blood sugar

• Mood changes, anxiety, or depression

• Multiple small follicles visible on the ovaries during ultrasound

Long-term, PMOS is also associated with increased risk of:

• Type 2 diabetes

• Cardiovascular disease

• Depression

• Sleep apnea

• Infertility

• Endometrial cancer

Importantly, not everyone experiences the same symptoms, and not everyone will have visible ovarian follicles on ultrasound. That variability is one of the main reasons many experts felt the old name no longer reflected the full reality of the condition.