Adolescents in treatment for alcohol use disorders (AUDs) have high rates of comorbidity with other substance use disorders and psychiatric disorders, such as schizophrenia, impulse control disorders, mood disorders, sleep disorder or sexual dysfunctions (Center for Substance Abuse Treatment, 2005). Drugs and alcohol can cause an adolescent without mental illness to experience the onset of symptoms. "For example, a twenty-year old college student who begins to hear threatening voices inside of his head and becomes paranoid that his chemistry professor is poisoning his food after smoking marijuana could represent a reaction to the drug (potentially called a "substance-induced psychosis ) or the first episode of psychosis for this individual (Duckworth & Freedman, 2013).
Furthermore, treatment seems to be less effective with youth who have more than one concurrent problematic. To date, researchers