Diagnostic Statistical Manual IV

The Diagnostic Style Manual IV is a psychological diagnostic tool.

Known as the DSM-IV, the manual is published by the American Psychiatric Association and contains diagnostic criteria on all mental health disorders for both children and adults. It also lists known causes of these disorders, statistics in terms of gender, age at onset, and prognosis as well as some research concerning the optimal treatment approaches. Mental health professionals use the DSM IV manual when working with patients to better understand their illness and potential treatment and to help third party payers, like insurance companies, understand the needs of the patient. The book is typically considered the ‘bible’ for any professional who makes psychiatric diagnoses in the United States and many other countries.

DSM IV and tobacco
In 1994, Philip Morris argued against the inclusion of tobacco dependence as a diagnosis in the DSM, arguing that cigarette smoking is a matter of personal choice, rather than a pharmacologically mediated "addiction." 

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