Substance Use Disorder
Substance use disorder is a condition where the consumption of one or more substances results in clinically significant impairments or difficulties. Although the term substance can refer to any physical matter, in this context it is restricted to the consumption of psychoactive drugs. Addiction and drug addiction are components of a substance abuse disorder, the addition being the most severe form of the condition.
This condition is characterized by a pattern of pathological consumption of a drug or toxin without medical purposes, resulting in repeated adverse social consequences such as not being able to respond to work, family or school obligations, or being the cause of interpersonal conflicts or problems with the law.