Types & Diagnosis

The four phenotypes, Rotterdam criteria, which labs to ask for, and how to read the results you already have.

• Is PMOS the Same as PCOS? Yes — Here Is Exactly What ChangedPMOS and PCOS are the same condition. A 2026 global consensus in The Lancet changed the name, not the diagnostic criteria, the biology, or the treatment.
• PCOS Diagnosis: What Gets Tested, and In What OrderHow a PCOS diagnosis is actually made — the two-of-three rule, which bloods run first, what has to be ruled out, and when an ultrasound is not needed.
• PCOS Diagnostic Criteria: The Rules Your Doctor Is Actually UsingThe PCOS diagnostic criteria compared — NIH 1990, Rotterdam 2003 and AE-PCOS 2006 side by side, the thresholds that count, and what the 2023 guideline changed.
• PCOS Is Now PMOS: What Changed, and What Didn'tPCOS was renamed polyendocrine metabolic ovarian syndrome (PMOS) in 2026. What changed is the name — not the criteria, not your diagnosis, not your treatment.
• PCOS vs PMOS: What Changed When the Name DidPCOS and PMOS are one condition with two names. What the 2026 rename changed, what it left untouched, and which word to use where — records, labs, research.
• PMOS Diagnosis Criteria: What Actually Gets CheckedThe PMOS diagnosis criteria in full — the two-of-three rule for adults, follicle and AMH thresholds, what gets ruled out first, and the stricter adolescent bar.
• PMOS Meaning: What Polyendocrine Metabolic Ovarian Syndrome Actually SaysPMOS stands for polyendocrine metabolic ovarian syndrome — the 2026 consensus name for PCOS. What each word means, and what the change does not alter.
• PMOS vs PCOD: Same Condition, Three Different NamesPMOS and PCOD describe one condition. PCOD is an older informal term with no diagnostic criteria of its own — and it does not mean you have a milder case.
• The Rotterdam Criteria: The Two-of-Three Rule, ExplainedWhat the Rotterdam criteria actually say, the four phenotypes they created, how they differ from the NIH and AE-PCOS rules, and what the 2023 guideline changed.
• Do I Need to Tell My Doctor PCOS Is Now PMOS?No — the PMOS rename does not change your diagnosis, your code or your prescriptions. Here is when it is still worth saying out loud, and what to ask instead.
• Why Was PCOS Renamed? The Four Reasons Behind the Switch to PMOSPCOS was renamed polyendocrine metabolic ovarian syndrome in 2026. The four evidence-based reasons behind the change, and what it does not change.