10/01/2025
In practice, PCOS is most often diagnosed using the Rotterdam criteria, which require any 2 of 3 features:
1️⃣ High androgens – can show up as acne, excess hair growth (hirsutism), or hair thinning.
2️⃣ Irregular menstrual cycles and ovulatory dysfunction – often seen as irregular or missed periods, or difficulty predicting cycles.
3️⃣ Polycystic ovaries on ultrasound – when multiple small follicles are seen on imaging.
The NIH has also classified 4 types of PCOS. This framework is mainly used in research to see what kinds of treatments work for the different types, which can also help women better understand how PCOS affects them and what treatment options might be most helpful.
Here are the 4 NIH types:
• Type A (Classic) – High androgens + irregular cycles + polycystic ovaries
•Type B (Classic) – High androgens + irregular cycles, no polycystic ovaries
•Type C (Non-Classic) – High androgens + polycystic ovaries, regular cycles
•Type D (Non-Classic) – Irregular cycles + polycystic ovaries, no high androgens
💡 How do you know what type you have? Your provider may check hormone levels, assess ovulation, and use ultrasound imaging—steps that are part of the diagnostic process.
❓ Why does this matter? Understanding your type can make your symptoms feel less confusing and help guide a more personalized care plan.
✨ Want support tailored to your PCOS?
Visit www.anuenourished.com to learn more.
