Skip to content

Need urgent help? See crisis and overdose guidance

Evidence-led information · Clinical editorial standards

Find treatment
Topic library

Category: Substance Use

Foundational guidance on drug use, substance use disorders, dependence, treatment and recovery.

Substance Use 3 min read

Signs and Symptoms of Substance Use Disorder

Substance use disorder can affect control, health, relationships, work, finances, and safety. No single sign proves a diagnosis, but clusters of change…

Updated September 4, 2026
Substance Use 3 min read

How Addiction Is Diagnosed and Assessed

A good addiction assessment examines what is used, how, why, and with what consequences, alongside withdrawal risk, physical health, mental health, medication,…

Updated September 4, 2026
Substance Use 4 min read

Addiction Treatment: What Works and How Care Is Matched

Effective addiction treatment is individualized, evidence-based, long enough to address the person’s needs, and connected to continuing care. Detoxification alone is rarely…

Updated September 4, 2026
Substance Use 3 min read

Relapse Warning Signs and Prevention

Relapse is a process, not only the moment of use. Earlier warning signs may include isolation, sleep disruption, romanticising past use, missed…

Updated September 4, 2026
Substance Use 4 min read

Cocaine Addiction: Signs, Risks and Treatment

Cocaine addiction can develop with powder cocaine, crack cocaine, or other routes of use. Repeated binges, craving, loss of control, and continued…

Updated September 4, 2026