This book is the result of an informal association between the editors which extends back to 1974. At the beginning, it was a tenuous alliance between physicians in quite different medical subspecialties-urology and psychiatry. As the alliance was forged, subspecialty rivalries and mistrust were replaced by a common clinical interest in the diagnosis and treatment of erectile problems. We quickly became aware of the high prevalence of such disorders, how poorly prepared we were to make accurate and re sponsible diagnosis and treatment plans, and how complicated an etiol ogical diagnosis could...