How does the pcos signs check work?
- The 2023 international guideline describes PCOS in adults when two of three are present: irregular cycles, signs or blood tests showing higher androgens, and polycystic ovaries on a scan (or high AMH).
- We ask about the first two. A scan or blood test is for a clinician.
- Irregular cycles mean cycles often over 35 days or under 21 days, or fewer than 8 periods a year, more than 1 year after periods start.
- Skin, weight and family history are things doctors ask about, but they don't count towards diagnosis on their own.
How common is PCOS?
PCOS affects around 1 in 10 women and people with ovaries, and up to 70% may not have been diagnosed (2023 international guideline). It's linked to hormones and metabolism, which is why a newer name, PMOS, is being adopted. It's manageable, and getting it recognised helps with fertility, skin, mood and long-term health.
What happens at the GP
Usually questions about your periods and symptoms, blood tests for hormones (and to rule out thyroid and other causes), and sometimes an ultrasound. Read our friendly guide to PCOS and PMOS.
When to see a doctor
- Your periods are often more than 35 days apart, or have stopped.
- Extra hair, acne or hair loss is bothering you.
- You're trying to conceive and your cycles are irregular.
In the UK you can call NHS 111 for advice, any time. In an emergency call 999 (UK) or 911 (US).
Questions people ask
What are the main signs of PCOS?
Irregular or missing periods, extra hair on the face or body, acne, and thinning hair on the head. Some people also have trouble getting pregnant or find weight hard to manage (NHS).
Is PCOS being renamed?
Yes. An international consensus has proposed renaming it polyendocrine metabolic ovarian syndrome (PMOS), to reflect that it's about hormones and metabolism, not cysts. You'll see both names for a while.
Can I have PCOS with regular periods?
Yes, if you have signs of higher androgens and the ovary findings on a scan. Talk to a GP if you have symptoms.
Can teenagers be diagnosed?
Cycles are often irregular in the first years after periods start, and scans aren't used for diagnosis within 8 years of the first period. Doctors may say "at risk" and review later.
Is this a diagnosis?
No. It's a structured way to notice patterns and decide whether, and how soon, to talk to someone. Only a clinician can diagnose, usually with an examination and sometimes tests.
Is anything I enter saved or sent?
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Sources
Written by the Splash team · Sources checked Oct 2026 · Updated
