DSM-III

The Diagnostic and Statistical Manual of Mental Disorders (DSM) is published by the American Psychiatric Association (APA) and offers a common language and standard criteria for the classification of mental disorders. It is used, or relied upon, by clinicians, researchers, psychiatric drug regulation agencies, health insurance companies, pharmaceutical companies, the legal system, and policy makers together with alternatives such as the ICD-10 Classification of Mental and Behavioural Disorders, produced by the WHO.

The DSM is now in its fifth edition, DSM-5, published on May 18, 2013. It evaluated the patient on five axes or dimensions rather than just one broad aspect of 'mental disorder'. These dimensions relate to biological, psychological, social and other aspects. The DSM evolved from systems for collecting census and psychiatric hospital statistics, and from a United States Army manual. Revisions since its first publication in 1952 have incrementally added to the total number of mental disorders, although also removing those no longer considered to be mental disorders.

The International Classification of Diseases (ICD) is the other commonly used manual for mental disorders and actually the official system for the US. It is distinguished from the DSM in that it covers health as a whole. While the DSM is the most popular diagnostic system for mental disorders in the US, the ICD is used more widely in Europe and other parts of the world. The DSM-IV-TR (4th. ed.) contains specific codes that allows for comparisons between the DSM and the ICD manuals, which may not systematically match because revisions are not simultaneously coordinated.

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