Substance Use Disorders Overview

A collection of key terms and definitions related to substance use disorders.

Intoxication

A temporary state of being affected by a substance, leading to changes in mood, emotion, and perception.

Tolerance

The need for increased doses of a substance to achieve the same effect, due to physical changes in the body.

Withdrawal

The symptoms experienced when a substance is stopped after a period of dependence, as the body adjusts to the absence of the substance.

Substance Use Disorder

A diagnosis indicating the harmful consequences of substance use on a person’s life, including issues related to tolerance, withdrawal, and behavior.

CNS Depressants

Substances that slow down the central nervous system, reducing tension and inhibitions.

CNS Stimulants

Substances that increase activity in the central nervous system, leading to heightened alertness and energy.

Hallucinogens

Substances that alter perception, mood, and various cognitive processes.

Opioids

Highly addictive substances derived from poppies that affect the brain's endorphin receptors.

Fetal Alcohol Syndrome

A condition resulting from alcohol exposure during pregnancy, leading to developmental issues and intellectual disabilities.

Functioning Alcoholics

Individuals who manage to maintain normal daily functions while being dependent on alcohol.