Anxiety Disorders Clinical Trial
Official title:
Imagery Rescripting for Obsessive Compulsive Disorder and Body Dysmorphic Disorder: a Multiple-Baseline Single-Case Experimental Design.
The goal of this multiple baseline case series study is to test the effect of imagery rescripting (ImRs) in Obsessive Compulsive Disorder (OCD) and Body Dysmorphic Disorder (BDD). Primary objective :The course of schema or core beliefs and change in OCD and BDD. To investigate the effectiveness of imagery rescripting on factors presumed to underlie the disorder, according to schema theory, and on OCD and BDD symptoms. Secondary objective: The change in OCD and BDD symptoms (full questionnaire), schemata and modes, core emotions, mood, affect and obtrusiveness of intrusion. Other objectives are research into the working mechanisms of imagery rescripting by collecting qualitative data from patients and their practitioner in a qualitative interview. For this study, a multiple-baseline single-case experimental design (SCED) is used testing different outcome variables in 18 OCD patients and 18 BDD patients. After a variable baseline period of 3-8 weeks participants will start twice weekly with imagery rescripting for 12 sessions, followed by a 6 week follow up. Participants will rate schema- or core beliefs and OCD or BDD severity on a visual analogue scale. In addition participants will rate core emotions, affect and obtrusiveness of the intrusion. Secondary we will asses four times questionnaires about OCD of BDD symptoms, depression and schemas en modes. After treatment participants will be interviewed about their experiences.
Status | Recruiting |
Enrollment | 36 |
Est. completion date | January 2027 |
Est. primary completion date | January 2026 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - Meet the criteria for OCD or BDD, a primary diagnosis according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) - Are aged 18 and beyond - Dutch literacy - Cut-off Y-BOCS of 20 - No change in medication. Stable dose at least 6 weeks prior to study. Exclusion Criteria: - Current (hypo)mania - Active suicidal plans - Current psychosis (excluding delusional symptoms related to disorder) - Alcohol or drugs abuse as diagnosed by Diagnostic and Statistical Manual of Mental Disorders (DSM-5) - Electroconvulsive therapy in last 6 months - Neurological disorder or Intelligence Quotient < 80 |
Country | Name | City | State |
---|---|---|---|
Netherlands | Department of Psychiatry, AMC | Amsterdam-Zuidoost | Noord-Holland |
Lead Sponsor | Collaborator |
---|---|
Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) |
Netherlands,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Other | Qualitative interview | With an interview, participants will be interviewed after treatment. A qualitative analysis will be used. | Post treatment up to 8 months | |
Primary | Schema of core beliefs | Idiosyncratic schema- or core beliefs related to Obsessive Compulsive Disorder (OCD) or Body Dysmorphic Disorder (BDD) are daily rated on a Visual Analogue Scales (VAS). The mean of the scores is calculated, range 0-100. A higher score indicates symptom severity. | 15-22 weeks | |
Primary | Obsessive Compulsive (OCD) and Body Dysmorphic (BDD)symptoms | OCD and BDD severity is assessed with items based on the Yale Brown Obsessive Compulsive Scale (Y-BOCS(-BDD)) rated on a Visual Analogue Scale. The mean of the scores is calculated, range 0-100. A higher score indicates symptom severity. | 15-22 weeks | |
Secondary | Core Emotions, affect strength, obtrusiveness of intrusion. | Rated on a Visual Analogue Scale. The mean of the scores is calculated, range 0-100. A higher score indicates symptom severity. | 4 times: at start, end baseline (up to 8 weeks), after treatment (expected 6-7 weeks after start intervention), at follow up (6 weeks after ending treatment) | |
Secondary | Yale Brown Obsessive Compulsive Scale (Y-BOCS(-BDD)) | Y-BOCS(-BDD) assesses severity of OCD or BDD symptoms. The minimum score is 0, the maximum score is 48. A higher score indicates symptom severity. | 4 times: at start, end baseline (up to 8 weeks), after treatment (expected 6-7 weeks after start intervention), at follow up (6 weeks after ending treatment) | |
Secondary | Hamilton Depression Rating Scale (HDRS) | The Hamilton Depression Rating Scale assesses severity of depression. The minimum score is 0, the maximum score is 52. A higher score indicates symptom severity. | 4 times: at start, end baseline (up to 8 weeks), after treatment (expected 6-7 weeks after start intervention), at follow up (6 weeks after ending treatment) | |
Secondary | Young Schema Questionnaire (YSQ) and Schema Mode Inventory (SMI) | The Young Schema Questionnaire and the Schema Mode Inventory assesses severity of schemas and modi. The minimum score per scale is 0, the maximum score is 6. A higher score indicates symptom severity.. | At start, after treatment (expected 6-7 weeks after start intervention), at follow up (6 weeks after ending treatment) |
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