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Women's Health

Polycystic ovary syndrome (PCOS)

Polycystic ovary syndrome (PCOS) is a common condition that affects how the ovaries work. It can cause irregular periods, and symptoms can often be managed.

At a glance

  • PCOS is a common condition affecting how the ovaries work.
  • It can cause irregular periods, excess hair growth and difficulty getting pregnant.
  • Symptoms can often be managed with lifestyle changes and treatment.
On this page (6 sections)

Overview

Polycystic ovary syndrome (PCOS) is a common condition that affects how the ovaries work. It is linked to hormone levels, and it often begins in the teenage years and continues until the menopause [1].

Symptoms

Common signs include irregular or infrequent periods, excess hair growth (often on the face or body), thinning hair on the head, acne or oily skin, weight difficulties, and difficulty getting pregnant [1].

Causes

The exact cause is not known, but it is linked to hormones, including how the body responds to insulin, and it can run in families [1].

Diagnosis

PCOS is usually diagnosed after a GP checks your symptoms, arranges blood tests to look at hormone levels, and sometimes an ultrasound scan of the ovaries [1].

Management

There is no cure, but symptoms can often be managed. This can include lifestyle changes such as a healthy diet and activity, and treatments aimed at particular symptoms or at helping with fertility [1]. A healthcare professional can discuss the options with you.

When to see a doctor

See a GP if you have symptoms of PCOS, especially if they are affecting your daily life or you are trying to get pregnant [1].

Get medical helpIf you have severe or worsening symptoms, seek medical help without delay. In an emergency call 999.

Sources

  1. NHS. Polycystic ovary syndrome (PCOS) (opens in new tab) Accessed 12 August 2026.

About this page

Written by
Consumer Health editorial team
Medical review
Pending — this page has not yet been reviewed by a named clinician. Read our medical review policy.
Last updated
August 2026
Next review due
August 2027

Important: This information is for general guidance only and does not replace professional medical advice. It is not intended to diagnose or treat any condition. Always speak to a qualified healthcare professional — such as your GP or pharmacist — for advice about your individual circumstances, and do not start, stop or change any prescribed treatment based only on this page. If you think you are having a medical emergency, call 999. Consumer Health is an independent health-information resource and is not the NHS or a government body.

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