Which Type of PCOS (Now PMOS) Do You Have?

If you've searched "which type of PCOS do I have," you've probably landed on the same four-box quiz a dozen times: insulin-resistant, adrenal, inflammatory, post-pill. Pick your symptoms, get your "type," buy the matching supplement. It feels clarifying. The trouble is that no gynecologist or endocrinologist actually diagnoses you that way — and if you walk into an appointment asking to be treated for "adrenal PCOS," you may get a puzzled look.

That doesn't mean the question is wrong. PCOS — now PMOS, after the 2026 Lancet consensus renamed it Polyendocrine Metabolic Ovarian Syndrome — genuinely varies from person to person, and the variation does change what works for you. The four-type quizzes are reaching for something real. They're just using the wrong map. Here's the map doctors use, what's actually varying underneath, and the labs that tell you where you sit.

The "four types of PCOS" you keep seeing online

The insulin-resistant / adrenal / inflammatory / post-pill framework comes from functional-medicine writing, not from any diagnostic guideline. It's popular because it's intuitive: it names root causes instead of just listing symptoms, and it hands you a next step. As a way to think about drivers, it's not a bad instinct — insulin resistance and adrenal androgens are real, measurable things.

What it isn't is a classification your clinician recognizes or an answer you can reach by quiz alone. There's no lab cutoff for "inflammatory type." "Post-pill" describes a timing story, not a distinct disease. And most people who take these quizzes come out as a mix of all four — which is the tell that the boxes don't cleanly exist. So treat the four-type language as a starting vocabulary, not a diagnosis, and let's translate it into what's measurable.

How doctors actually sort it: the four Rotterdam phenotypes

The medical standard is the Rotterdam criteria, endorsed by the 2023 International Evidence-Based Guideline (Teede et al.) and carried into the PMOS framework. A diagnosis needs two of three features: irregular or absent ovulation, high androgens (by symptoms or bloods), and polycystic ovaries on ultrasound. Which two you have defines one of four phenotypes:

• Phenotype A — all three: irregular cycles + high androgens + polycystic ovaries. The "classic" picture.
• Phenotype B — irregular cycles + high androgens, ovaries look normal.
• Phenotype C — high androgens + polycystic ovaries, but cycles are regular (the "ovulatory" phenotype).
• Phenotype D — irregular cycles + polycystic ovaries, without high androgens.

This is what shows up in your chart. It matters because the phenotypes carry different metabolic risk — the androgen-positive ones (A and B) tend to run the strongest insulin resistance — and because it's the language your doctor is actually working in. But notice what the phenotype doesn't tell you: why your androgens are high, or whether insulin is driving the whole thing. That's the part that changes your plan.

What's really varying is your driver — the pattern behind each

Underneath the phenotype, a few drivers do most of the work. This is where the four-type quizzes were reaching. Read these as symptom patterns to notice, not a self-diagnosis — they point to which labs are worth asking for, nothing more.

• Insulin resistance — the most common thread, present in roughly 70% of PMOS and the shared root underneath most presentations. The pattern: weight that won't shift, strong sugar cravings, afternoon energy crashes, darkened skin folds (neck, armpits). It runs even in lean bodies, where a normal BMI hides it.
• Ovarian androgen excess — high testosterone from the ovaries, often riding on insulin. The pattern: acne along the jaw, unwanted hair on the face or midline, scalp thinning.
• Adrenal androgen excess — androgens from the adrenal glands rather than the ovaries. Around 20–30% of women with PCOS show elevated DHEA-S (roughly a third in one 2022 retrospective of 648 young women), and it's more common in the non-classic B and C phenotypes. The tell is androgen symptoms with a normal testosterone but a raised DHEA-S — invisible unless you test for it.
• Low SHBG — the protein that binds testosterone. When it drops, more of your testosterone is biologically active even if the total reads "normal." It's a common pattern in Asian populations and links tightly back to insulin.

These aren't separate diseases. They're dials, and most people have more than one turned up.

The labs that reveal your driver mix

This is the honest answer to "which type do I have": you find out by measuring, not by quiz. A quiz — including ours — can flag a pattern, but it can't see your bloodwork. The tests worth asking your doctor to run:

• Fasting insulin and glucose (or HOMA-IR) — the insulin-resistance driver. Standard fasting glucose alone often misses it; fasting insulin is the more sensitive read.
• Total and free testosterone — ovarian androgen excess. Free testosterone matters most when SHBG is low.
• DHEA-S — the adrenal driver. This is the one generic panels skip, and the only way to catch an adrenal contribution.
• SHBG — reframes a "normal" testosterone that's actually running high in its active form.
• LH, FSH, and a pelvic ultrasound — help place you in a Rotterdam phenotype and rule out mimics like thyroid disease or high prolactin.

If you've read our page on why inositol sometimes doesn't work, this is the reason: a supplement aimed at insulin does little for an adrenal-driven picture. You can't match the tool to the driver until you've measured the driver.

What your driver changes about what actually works

This is why the question is worth asking at all — the driver, not the label, decides the plan.

• Insulin-driven → the lever is insulin sensitivity: inositol (a 40:1 myo-to-D-chiro blend, non-inferior to metformin for restoring cycles in a 2023 meta-analysis), metformin, and the metabolic basics.
• Androgen-driven → anti-androgen options: spearmint has the most direct evidence among supplements; combined oral contraceptives and spironolactone are the medical routes to discuss.
• Adrenal-driven → managing the androgen load and, sometimes, stress physiology — a different conversation from the insulin one.
• Mixed → most people. The plan layers, starting from the strongest driver.

We built Oestra's assessment to do exactly this sorting — reading your symptom pattern into a driver read: which dial is most likely turned up for you. It doesn't diagnose you — it gives you a structured read of where to start, and one to bring to the doctor who does. Our guide to which supplements have evidence behind each driver goes deeper on the matching itself.

Take the free 5-minute assessment → and see which driver your pattern points to — so your next appointment starts from the right question.

A quiz can't diagnose this — when to get tested

To be clear about the ceiling: nothing you do at home — no quiz, no symptom checklist, not ours — can confirm PMOS or pin your driver. Diagnosis needs a clinician, bloods, and usually an ultrasound, in part to rule out conditions that mimic it (thyroid disease, high prolactin, and — rarely — late-onset adrenal enzyme problems that a raised DHEA-S can flag).

Book a visit if you have irregular or missing periods for three or more months, androgen signs that bother you (acne, unwanted hair, scalp thinning), or you're trying to conceive without success. Bring the list of labs above; ask specifically for DHEA-S and fasting insulin, since standard panels often skip them. Knowing your driver is what turns a frustrating "you have PCOS, lose some weight" appointment into a plan aimed at the dial that's actually turned up.