"The Diagnostic and Statistical Manual of Mental Disorders or DSM is an American Handbook that is used by mental health professionals. It lists different categories of mental disorders and the criteria for diagnosing them. "

"The DSM-IV-TR states that, because it is produced for mental health specialists, its use by people without clinical training can lead to inappropriate application of its contents. Appropriate use of the diagnostic criteria is said to require extensive clinical training, and its contents 'cannot simply be applied in a cookbook fashion' ".

This information is from Wikipedia. See Wikipedia for more.

Search the web to find out more about the criteria for a mental disorder. Enter the name of a disorder such as ADHD and click on the "search" button. The results will show links to sites with the disorder criteria.