Substance Use Disorder

Substance use disorder (SUD) is a formal term to describe addiction and is defined as “the recurrent use of alcohol and/or drugs that causes clinically significant impairment, including health problems, disability, and failure to meet major responsibilities at work, school, or home.” SUDs can occur for illicit substances like heroin, and also legal substances like alcohol, nicotine, or prescription medications. 

Not all substance use is problematic. Instead of using the terms “SUD” or “addiction,” some prefer to say “chaotic use” to describe those whose substance use results in negative outcomes.

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