Dual Diagnosis (Psychosis and Cannabismisuse): Comparison of Specialized Treatment Versus Unspecified Treatment

University of Konstanz

Status and phase

Completed

Phase 1

Conditions

Psychotic Disorders

Intervention

Marijuana Abuse

Treatments

Behavioral: Cannabis-Consumption-Reduction-Training

Behavioral: Social competence Training

Study type

Interventional

Funder types

Other

Identifiers

NCT00783185

CRET

Details and patient eligibility

About

Intention of the study is to examine, if the symptomatology of dual diagnosis patients is less severe after a special indication training for reduction of cannabis consumption in comparison to unspecified trainings.

Point of interest is psychopathology and consumerism.

Full description

Dual diagnosis patients (psychosis and cannabis abuse) account for more clinical admissions than single diagnosis patients.

Cannabis misuse is a known risk factor for recurrence of psychosis.

A specified intervention on the basis of a manual for schizophrenic substance abusers is administered to inpatients in a specialized unit for young schizophrenic patients in a psychiatric hospital.

The control group, same indication (psychotic disorder and cannabis misuse) receives social competence training (specified for schizophrenic patients as well).

Admission to groups is randomly.

Enrollment

50 estimated patients

Sex

All

Ages

18 to 65 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Clinical diagnosis of schizophrenia and disorders with psychotic features
Misuse of cannabis during 12 months preceding admission to hospital

Exclusion criteria

Not able to attend training twice a week for 45 minutes (concentration, attention, psychotic symptoms, agitation)
Discharge from hospital before completion of training