Attention Deficit Hyperactivity Disorder among Clients Diagnosed with a Substance Use Disorder in the Therapeutic Communities: Prevalence and Psychiatric Comorbidity.

Background: Most severe substance use disorders (SUDs) are connected with attention deficit hyperactivity disorder (ADHD) and other mental health problems. Therapeutic communities (TCs) provide a suitable option for the treatment of severe SUDs. The relationship between ADHD, the severity of the SUD, and other comorbidities in residential TCs is unknown.