Substance use and substance use disorder differ by the frequency of use and the effect on a person’s life. Substance use disorder is a mental health condition. Substance use refers to using both legal ...

Alcoholic insanity is an outdated term to describe alcohol-induced psychosis. This is a rare condition in which alcohol use disorder, acute alcohol intoxication, and alcohol withdrawal can cause ...

Drug use causes long term or permanent changes in neural pathways. An ex-smoker's greatest enemy may not be the cigarette, but the ashtray. Items like needles or clinking glasses might trigger old ...