The declassification of homosexuality as a mental disorder by American Psychiatric Association in 1973 remains a significant moment in the history of psychiatry, not simply from the perspective of human rights but also because it forced psychiatrists to confront the complex and deep-seated conceptual issue of what it means to say that a condition is a 'mental disorder'. It was following this debate that DSM under Robert Spitzer, for the first time, attempted to provide a definition of mental disorder. Also, what is less apparent to many is how politically-driven APA's decision was. What is seemingly a scientific question, the pathology or non-pathology of homosexuality, was eventually settled by a democratic vote, a referendum of the full APA membership, following a bitter controversy. Homosexuality and American Psychiatry: The Politics of Diagnosis by Ronald Bayer is a political analysis of this historic event. It recounts in details the socio-political background a