Dual Diagnosis, Treatment, Prevention and Behavioural Addiction
Comorbidity, complications, prescribing and legal constraints, culturally appropriate prevention, motivational interviewing and non-substance addictive behaviours.
How to prepare for MRCPsych Paper B
Integrate clinical formulation, safety and current UK practice with disciplined appraisal of design, bias, estimates and applicability.
Core concepts
Concept 1
Co-occurring substance use and mental disorder require an integrated timeline and plan because symptoms, medicines, withdrawal, risk and engagement influence one another.
Exam cue: Ask whether symptoms predated use, occur during intoxication or withdrawal, and persist during a credible period of change.
Concept 2
Treatment may combine harm reduction, motivational work, psychosocial intervention, medication, physical healthcare and social support within current prescribing and legal frameworks.
Exam cue: Choose the next intervention according to readiness, immediate harm, dependence severity, comorbidity and available support.
Risk pitfalls and guardrails
Requiring abstinence before treating a serious co-occurring mental disorder.
Guardrail: Do not choose an option because it is merely familiar or associated; show why it best answers this lead-in.
Calling any frequent rewarding behaviour an addiction without impaired control, priority, persistence and harm.
Guardrail: Do not choose an option because it is merely familiar or associated; show why it best answers this lead-in.
Memory anchors
What is integrated dual-diagnosis care?
One coordinated formulation and plan addresses substance use, mental disorder, physical health, risk and social need together.
What is motivational interviewing?
A collaborative, person-centred method that evokes the person's own reasons and confidence for change while working with ambivalence.
What is harm reduction?
Practical action that lowers adverse consequences even when immediate abstinence is not chosen or achievable.
How should prevention be tailored?
To the population's risk, culture, setting, access barriers and evidence, with outcomes evaluated.
What supports a behavioural-addiction formulation?
Persistent impaired control and priority despite significant harm, after considering normal enthusiasm, coping, mania and other explanations.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
A patient with schizophrenia uses cannabis daily and is repeatedly redirected between psychosis and addiction teams. What is the best service response?
A depressed patient drinks nightly and says, 'Alcohol is the only thing that helps, but it is ruining my mornings.' Which response best reflects motivational interviewing?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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