DSM-5.

The current classification system of psychiatric illnesses is known as the The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR), which was published by the American Psychiatric Association (APA) in 2022. Psychiatrists and other mental health specialists use the DSM-5-TR to understand the overall and specific nature of mental illnesses. The DSM-5-TR is the authoritative handbook for research and statistical (epidemiological/public health) analyses; in other words, it serves as a template to estimate the incidence (new cases) and prevalence (existing cases) of mental disorders in the general population. Most important, the DSM-5-TR provides common terminology and criteria to standardize the assessment and diagnosis of mental illnesses in a variety of clinical settings.