The Diagnostic & Statistical Manual (DSM) is an ever-growing manual used to diagnosis mental illness. It began with three entries in its original form and ballooned to 374 disorders in DSM IV. DSM V is on the way.
Volumes I and II were based on Freudian psychology and hence psychiatrists were not taken especially seriously by other members of the medical profession since they could offer no “hard evidence” for any of the mental disorders they supposedly diagnosed. In an attempt to gain respect, acceptance and access to a large amount of insurance funding, DSM III took a more supposed scientific approach. It spoke in terms of purely biological causes for mental illnesses and of chemical imbalances. The only problem with both DSM III and IV is that no empirical evidence has ever been presented to back its claims; indeed much research finds there is, for example, no relation between serotonin and depression
Read an independent review on the Diagnostic and Statistical Manual: Psychiatry’s Deadliest Scam … download the PDF.