In the vast majority of books discussing reproductive endocrinology and infertility (REI), the contents are organized and classified by organs and systems. In contrast, this book is problem-based: chapters are sensibly arranged according to the chief complaints from patients presenting at the office. Readers will be guided to formulate the differential diagnoses, select the appropriate evaluation scheme to arrive at the correct diagnosis, and finally decide on the recommended treatment for the particular condition. The range of both male and female REI conditions are presented here, providing the clinician with the tools to sort through the numerous and often similar complaints from patients to reach the best treatment strategy. Discussed here are issues of puberty, menstrual conditions, uterine anomalies, fibroids, endometriosis, male and female infertility, pregnancy loss, menopause and many others.