Infertility is still a significant problem, despite impressive recent advances in diagnosis and therapy. Infertility for which no cause can be found poses particular problems for both the affected person(s) and the clinician. This book presents a critical and practical approach to the diagnosis and management of unexplained infertility. It first considers reproductive physiology and pathology, and then draws on these sections to describe and critically appraise the investigations used to exclude known causes. Having proposed a working definition of unexplained infertility on the basis of these investigations, the authors consider the management of the condition. They discuss the prognosis for untreated person(s), and evaluate the role of the new reproductive techniques. They particularly emphasize the emotional needs of those affected. This clear and comprehensive text will be of value to obstetricians, gynecologists, and any professional involved in the care of infertile couples.