The Diagnostic and Statistical Manual of Mental Disorders (DSM-5) is a standard classification of mental disorders published by the American Psychiatric Association. It is designed for mental health and other health professionals and is used for diagnostic and research purposes. The DSM has information about each mental disorder including features and criteria used to diagnose that disorder.
The Psychiatry Online database provides access to the DSM-5, DSM-5 Handbook of Differential Diagnosis and DSM Cases as well as psychiatry textbooks and journals:
The International Statistical Classification of Diseases and other Health Related Problems (ICD) is an international standard for reporting diseases and health conditions, published by the World Health Organization. It defines diseases, disorders, injuries and other health related conditions.