Polycystic ovary syndrome (PCOS) is one of the most common reproductive health problems of women, causing irregular periods and potential infertility amongst other challenging symptoms. Effective treatment remains a significant challenge and is largely achieved through hormonal medication and lifestyle changes. This third edition covers the aetiology, pathology, impact on fertility and effective medical and surgical management. The content has been thoroughly revised in line with updated guidelines and research developments in the field. A new chapter on the patient's perspective has been...