What In the US and Canada psychological problems are classified by using?

In the U.S. and Canada, psychological problems are primarily classified using the Diagnostic and Statistical Manual of Mental Disorders (DSM), published by the American Psychiatric Association. The DSM provides standardized criteria for diagnosing mental health conditions, facilitating consistent communication among healthcare professionals. In Canada, the DSM is widely used, though some practitioners may also reference the International Classification of Diseases (ICD), published by the World Health Organization, for broader health classifications. Both systems aim to enhance diagnosis, treatment, and research in mental health.