Let's start with the most confusing thing about PCOS: its name
You can have PCOS without what most people would casually call "ovarian cysts."
And you can have polycystic-appearing ovaries without having PCOS.
Confusing? Yes.
It's one reason the terminology surrounding the condition has been reconsidered internationally. In May 2026, an international initiative announced polyendocrine metabolic ovarian syndrome (PMOS) as a new name for the condition historically known as polycystic ovary syndrome. Because PCOS remains the familiar and highly searched term, I'll use PCOS throughout this article while acknowledging that terminology is evolving.
More importantly, let's talk about what the syndrome actually is.
PCOS is more than an ovary condition
PCOS is a complex endocrine and metabolic condition.
It can involve:
- ovulatory dysfunction
- elevated androgen activity
- metabolic abnormalities
- insulin resistance
- reproductive symptoms
- dermatologic symptoms
- fertility challenges
- psychological health
Not every person with PCOS experiences every feature.
That's why two people can both have PCOS and look completely different clinically.
So what are the "cysts"?
This terminology has created decades of confusion.
The ovarian feature associated with PCOS refers to a characteristic pattern of multiple small follicles seen on ultrasound—not necessarily pathological ovarian cysts in the everyday sense of the word.
Follicles are structures involved in egg development.
So the name can create an inaccurate mental image of ovaries covered in dangerous cysts.
That's not what PCOS means.
How is PCOS actually diagnosed?
Under the widely used international evidence-based criteria for adults, PCOS diagnosis generally requires two of three features, after other potential causes have been excluded:
- clinical or biochemical hyperandrogenism,
- ovulatory dysfunction,
- polycystic ovarian morphology on ultrasound—or, under the 2023 international guideline, AMH can be used as an alternative to ultrasound in appropriate adults.
If someone already has irregular cycles/ovulatory dysfunction and hyperandrogenism, ultrasound or AMH isn't required to establish the diagnosis.
So yes:
You can absolutely have PCOS without polycystic ovaries on ultrasound.
What is hyperandrogenism?
Androgens are hormones that everyone produces, although concentrations and biological effects differ.
In PCOS, androgen activity may be elevated.
That can show up clinically as:
- increased facial or body hair
- acne
- scalp hair thinning
Or it may be identified through biochemical testing.
Not everyone with acne has PCOS. Not everyone with facial hair has PCOS.
This is why diagnosis requires looking at a pattern rather than one isolated symptom.
What does ovulatory dysfunction look like?
Ovulatory dysfunction means ovulation isn't occurring normally or predictably.
One clue can be irregular menstrual cycles.
Some people have very long cycles. Some skip periods. Some experience unpredictable bleeding.
And importantly, having menstrual bleeding doesn't always prove that ovulation occurred normally.
This matters for fertility, but fertility is not the only reason ovulation matters.
Long periods of anovulation can leave the endometrium exposed to estrogen without adequate opposing progesterone, which is one reason endometrial health is part of long-term PCOS care.
Where does insulin resistance come in?
This is where PCOS becomes much bigger than "a period problem."
Insulin resistance is recognized as an important feature of PCOS.
When cells respond less effectively to insulin, the body may compensate by producing more of it.
Elevated insulin signaling can interact with ovarian androgen production and other metabolic pathways.
But here's an important nuance:
There is no single routine insulin-resistance test that perfectly diagnoses PCOS. The international guideline notes that commonly available measures of insulin resistance have limited accuracy and are not recommended as routine diagnostic tests for PCOS itself.
So PCOS is not diagnosed simply because someone has "high insulin."
PCOS does not have one body type
This deserves its own section.
PCOS is frequently depicted as a condition that looks one specific way.
Usually that stereotype involves body size, facial hair and acne.
That's reductive.
People across body sizes can have PCOS.
Body weight may influence metabolic risk and symptoms in some individuals, but you cannot look at someone and determine whether she has PCOS.
The 2023 international guideline specifically emphasizes the importance of addressing weight stigma as part of PCOS care.
That matters.
Women deserve healthcare—not assumptions about their bodies.
PCOS isn't just about fertility
This is another misconception I want to retire.
Many people discover PCOS when they have difficulty becoming pregnant because irregular ovulation can make conception harder.
But PCOS matters even if you never want children.
Long-term care can involve:
- menstrual health
- endometrial health
- metabolic risk
- glucose regulation
- cardiovascular risk factors
- sleep apnea
- mental health
- sexual health
- dermatologic symptoms
The international guideline emphasizes reproductive, metabolic and psychological features rather than treating PCOS exclusively as a fertility condition.
Mental health belongs in this conversation
PCOS can have a significant psychological burden.
The international guideline specifically highlights the high prevalence of psychological features and recommends attention to emotional wellbeing and quality of life.
That isn't surprising.
Imagine navigating unpredictable periods, acne, unwanted hair growth, fertility concerns, metabolic health concerns and repeated messages that you simply need to "lose weight."
That's not merely a hormone panel.
That's a person's life.
Can you "balance your hormones" and cure PCOS?
This is where wellness marketing loses me.
PCOS is not evidence that your body simply forgot how to "balance" itself.
And there isn't one tea, supplement, detox, diet or morning routine that cures the condition.
Management should be individualized based on someone's symptoms, metabolic health, reproductive goals and overall health.
Options can include lifestyle interventions, hormonal contraception, medications targeting metabolic features, anti-androgen approaches and fertility treatments when needed.
Which treatment is appropriate depends on the person.
What should you do if you think you have PCOS?
Don't diagnose yourself from a TikTok checklist.
Start documenting your symptoms.
How long are your menstrual cycles?
Do you skip periods?
Have you noticed new facial hair, acne or scalp hair changes?
Do you have laboratory results?
What medications or contraception are you using?
When did the symptoms begin?
Then bring that information to a qualified healthcare professional.
PCOS is partly a diagnosis of pattern recognition and exclusion. Other conditions—including thyroid disorders, hyperprolactinemia and nonclassic congenital adrenal hyperplasia—can produce overlapping features and may need to be ruled out.
The bottom line
PCOS is one of those women's-health conditions where the name itself has made education harder.
You don't necessarily need ovarian "cysts" to have it.
You don't need to have a certain body type.
You don't have to be trying to get pregnant for it to matter.
And you can't diagnose it from one symptom.
PCOS is a complex endocrine, reproductive and metabolic syndrome, and international guidance increasingly reflects that complexity.
So during PCOS Awareness Month, I don't just want us to make more people aware that PCOS exists.
I want us to understand it better.
Because women's health doesn't improve when we give complicated conditions catchy labels.
It improves when women actually understand what is happening inside their bodies.