Symptoms · · 2 min read
PCOS: irregular periods, hormones and metabolic health
Polycystic ovary syndrome is a hormonal and metabolic condition, not simply an ultrasound finding. Irregular periods, acne and excess hair growth can warrant assessment, but none establishes PCOS on its own.
Symptoms and terminology
Infrequent periods, difficulty conceiving, excess hair growth and acne can occur. Symptoms and body size vary. In 2026 NHS material also uses the name polyendocrine metabolic ovarian syndrome, or PMOS; PCOS remains a useful term when looking up existing information.
Why a scan is not enough
Assessment combines clinical features and exclusion of alternative causes. A clinician decides whether hormone tests or imaging are needed. Adolescent assessment differs from adult assessment, so an isolated ovarian scan or an online checklist should not be treated as a diagnosis.
Look beyond the menstrual cycle
Glucose regulation, emotional wellbeing and sleep may also need attention. Ask which checks are appropriate for you. Sustainable habits can support health without restrictive dieting or treating symptoms as a failure of willpower.
Match the plan to your priorities
Cycle regulation, skin symptoms and trying to conceive may require different approaches. Tell your clinician whether pregnancy is a current goal. Do not start hormonal medicines or metformin from someone else's plan; agree how treatment will be reviewed.
Your practical checklist
- Record cycle dates and changes in symptoms.
- Bring medication details and previous test results.
- Discuss pregnancy intentions and relevant metabolic checks.
Questions and answers
Does PCOS only affect people with a higher weight?
No. Body size does not establish or rule out the condition. Assessment is based on clinical findings, not appearance.
Does PCOS mean pregnancy is impossible?
No. Ovulation may be irregular, but treatment options exist. Discuss fertility and pregnancy planning with a qualified clinician.
Sources
Sources checked on 26 September 2026.