Psychosis with coexisting substance misuse (CG120)
This guideline offers best practice advice on the assessment and management of people with psychosis and coexisting substance misuse.
Psychosis is a condition that affects a person’s mental state, including their thoughts, mood and behaviour. The symptoms of psychosis are:
- hallucinations – hearing voices and sometimes seeing things that are not really there
- delusions – having fixed beliefs that are false but which the person believes in completely.
Substance misuse is a broad term encompassing, in this guideline, the harmful use of any psychotropic substance, including alcohol and either legal or illicit drugs. Use of such substances is harmful when it has a negative effect on a person’s life, including their physical and mental health, relationships, work, education and finances or leads to offending behaviour.
Corrections to the full version of Psychosis with coexisting substance misuse (clinical guideline 120) published in March 2011
A correction has been made to the full version of this guideline to incorporate references to Cleary, M., Hunt, G. E., Matheson, S. L., Siegfried, N., Walter, G. (2008) Psychosocial interventions for people with both severe mental illness and substance misuse. Cochrane Database of Systematic Reviews, Issue 1.
This page was last updated: 19 September 2013
- Web format
- Quick reference guide (PDF)
- NICE Guideline (PDF)
- Full Guideline
- CG120 Triniaeth a chymorth i bobl â seicosis sy'n defnyddio cyffuriau a/neu alcohol: deall canllawiau NICE (fformat MS Word)
Information for the public
Implementation tools and resources
- Baseline assessment tool
- Clinical audit tool
- Clinical case scenarios
- Costing statement
- Slide set
- Online learning resource (DH/Coventry University)
- CG120 Psychosis with coexisting substance misuse: podcast
See this guidance in practice
The summary of the key recommendations in the guidance written for patients, carers and those with little medical knowledge and may be used in local patient information leaflets.
Quick Reference Guide
The quick reference guide presents recommendations for health professionals
The published NICE clinical guideline, contains the recommendations for health professionals and NHS bodies.
The published full clinical guideline for specialists with background, evidence, recommendations and methods used.