The DSM-5, or the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, is a comprehensive guide used by mental health professionals to diagnose and classify mental disorders. Published by the American Psychiatric Association, it provides standardized criteria and descriptions for various mental health conditions, helping clinicians make informed decisions about treatment. This manual includes a wide range of disorders, from anxiety and depression to more complex conditions like schizophrenia and bipolar disorder. The DSM-5 is regularly updated to reflect new research and changes in understanding mental health, ensuring that it remains a relevant resource for professionals in the field.