Polycystic ovary syndrome is one of the most common hormonal conditions in people with ovaries, affecting 8–13% of those of reproductive age worldwide, according to the World Health Organization. Yet many people with PCOS wait years for a diagnosis, partly because the condition presents so differently from person to person.
Why PCOS can be difficult to diagnose
PCOS is diagnosed using the Rotterdam criteria, established by an international expert group in 2003. Diagnosis requires two of the following three features:
- Irregular or absent ovulation (typically presenting as irregular or absent periods)
- Clinical or biochemical signs of excess androgens: excess hair growth, acne, or elevated testosterone on blood tests
- Polycystic ovaries on ultrasound
The challenge is that these features overlap with other conditions, and they can be subtle or inconsistent. Some people with PCOS have regular periods. Some have normal ultrasound findings. An estimated 70% of people with PCOS may remain undiagnosed (Bozdag et al., Human Reproduction Update, 2016).
The symptoms worth bringing to your appointment
PCOS can cause a wide range of symptoms that aren't always associated with reproductive health in the way people might expect. These include:
- Irregular periods, including very frequent or very infrequent cycles
- Persistent fatigue, often significant and difficult to attribute to any single cause
- Mood changes, anxiety, or depression
- Difficulty losing weight or unexplained weight changes
- Acne, particularly on the jawline or back
- Excess hair growth on the face, chest, or abdomen
- Thinning hair or hair loss on the scalp
- Pelvic pain
- Difficulty conceiving, if this is relevant to you
Not everyone has all of these. Bringing a list of your specific experiences (with as much detail about timing, frequency, and severity as you can provide) helps your doctor see the full picture rather than a partial one.
What to track before your appointment
Cycle tracking is particularly useful if you suspect PCOS. Before your appointment, note:
- The length of each cycle, from the first day of one period to the first day of the next
- Duration and flow of your period
- Any spotting between periods
- Any pelvic pain, and when in your cycle it occurs
Beyond cycle data, symptoms like fatigue, mood, and skin changes often fluctuate with hormonal patterns. Logging these consistently (even just a daily severity rating) can reveal patterns that a single appointment cannot.
Questions to bring to your appointment
- Based on my symptoms, should I be tested for PCOS?
- Which tests would you recommend, and what specifically are you looking for?
- If my tests come back within normal range, what would the next step be?
- Are there PCOS-related health risks I should be monitoring in the longer term?
- Is there anything I can do now, before a formal diagnosis?
If you've already been diagnosed with PCOS
PCOS management is highly individual. The priorities for someone primarily dealing with irregular periods and fertility are different from those of someone managing fatigue, mood symptoms, and insulin resistance. Being specific about which aspects of PCOS are affecting your quality of life most helps your doctor tailor their approach.
PCOS is a long-term condition, and evidence supports ongoing monitoring of associated health factors (including blood pressure, fasting glucose, and lipid levels) at intervals your doctor should be able to advise on.