Substance Use Disorder

Substance use disorder is a condition where drug use becomes compulsive and continues despite negative consequences on health, relationships, or responsibilities.

Definition

Substance use disorder ranges from mild to severe and involves impaired control, continued use despite harm, cravings, and sometimes tolerance and withdrawal. It is a treatable health condition, not a moral failing. The DAST-10 screens for drug-related problems (excluding alcohol and tobacco).

What it can feel like

  • Using more or longer than intended.
  • Failed attempts to cut down.
  • Continued use despite problems it causes.
  • Cravings, tolerance, or neglected responsibilities.

Related glossary terms

Veelgestelde vragen

Is substance use disorder a choice?

No. It is a recognized health condition involving changes in brain function. It is treatable with the right support.

What does the DAST-10 screen for?

The DAST-10 is a 10-item screen for drug-related problems in the past year, excluding alcohol and tobacco.

Sources

  • Skinner HA. Drug Abuse Screening Test (DAST)
  • WHO — substance use disorders

Last reviewed: 2026-07-02. Screening tools on LuriaLab are for education only and do not provide a diagnosis.