- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02782507
Cognitive Therapy for Distressing Visual Hallucinations: A Pilot Study
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Cognitive behavioural therapy (CBT) has been proven to be effective in helping people with distressing psychotic symptoms such as auditory hallucinations or upsetting delusional beliefs. While the majority of hallucinations reported in psychotic disorders are auditory, visual hallucinations (VH) have been reported in 16%-72% of people with psychotic disorders like schizophrenia and schizoaffective disorder. VH appear to be associated with particularly high levels of distress, and impairment. The global severity of illness was significantly higher in people with schizophrenia and VH, as compared to those people without VH. Whilst antipsychotic medication is the first line of treatment for psychotic symptoms like VH, there is evidence that many service users choose to refuse or discontinue their pharmacological treatment. For example, the largest trial to compare atypical antipsychotics found that 74% of patients with a diagnosis of schizophrenia discontinued their medication over 18 months. Hence, there is a need to develop a range of effective treatments. Despite its value in treating auditory hallucinations, at present there is no specific CBT treatment for VH.
We developed a cognitive behavioural model for visual hallucinations. This model has been tested in a recent study of 15 people with psychosis and distressing visual hallucinations which found that it was not the presence of the visual experience per se that led to the distress but the appraisal of it (as being a threat to psychological or physical wellbeing). Such appraisals are targeted in CBT for auditory hallucinations.
The aim of this research is to assess the value of a manualised cognitive behavioural intervention for distressing visual hallucinations by establishing if it reduces distress and disability. The aim is to determine the acceptability of the treatment package, feasibility of recruitment, the ability to deliver the treatment manual as intended, retention in the treatment, a preliminary estimate of effect size and maintenance of any gains at a brief follow up.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Tyne and Wear
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Sunderland, Tyne and Wear, United Kingdom, SR5 1NB
- Early Intervention in Psychosis service
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Meet entry criteria for Early Intervention in Psychosis (EIP) services
- Distressing visual hallucinations
- Age 18-38 years (the usual upper range of the EIP services)
Exclusion Criteria:
- Organic brain disease including dementia, epileptic psychosis, head injury (may be alternative cause of symptoms, or impair cognitive function and ability to do CBT)
- Primary diagnosis of drug or alcohol misuse (as above)
- Impaired intellect severe enough to interfere with ratings (as above)
- In-patient/acute psychiatric care needed at baseline assessment (patients must be well enough to engage in out-patient CBT)
- Previous CBT for psychosis (those previously exposed to the CBT model may be more likely to respond to CBT)
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Only
- Time Perspectives: Prospective
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change from baseline in distress of visual hallucinations as assessed by the Psychotic symptoms rating scale for hallucinations (PSYRATS).
Time Frame: change pre to post intervention which will be on average 3 months
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The PSYRATS measures distress, conviction and preoccupation and impact of life of symptoms such as voices or delusions.
It has been adapted to be relevant to visual hallucinations.
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change pre to post intervention which will be on average 3 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change from baseline on measure of depression (Beck Depression Inventory)
Time Frame: Baseline and at three months
|
The BDI is a short, reliable, widely used measure of depression/low mood.
It is a self report measure and participants will be asked to complete it before and after the intervention
|
Baseline and at three months
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Change from baseline on measure of symptoms of psychosis as measured by he Schizophrenia Change Scale (SCS). The SCS is a subscale of the Comprehensive Psychopathological Rating Scale (CPRS), (Montgomery, Taylor, & Montgomery, 1978)
Time Frame: baseline and at three months
|
The SCS is a short, reliable, widely used measure of symptoms of psychosis.
It is a interview based measure and participants will be asked to complete it before and after the intervention
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baseline and at three months
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Robert Dudley, Ph.D, Newcastle University
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- FSF 2010 / 11
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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