Body Dysmorphic Disorder
Conditions
Brief summary
The purpose of this study is to determine whether a computerized intervention designed to reduce appearance and evaluation related interpretation biases will reduce symptoms associated with body dysmorphic disorder.
Detailed description
The present study aims to examine the feasibility of a remote treatment for body dysmorphic disorder delivered via the Internet. To evaluate the efficacy of the IBM protocol we have developed in reducing negative appearance and evaluative related interpretations, we will conduct a two-arm randomized controlled trial over the internet. Individuals with a diagnosis of body dysmorphic disorder (N = 40) will be randomized to one of two conditions: 1) IBM or 2) progressive muscle relaxation. Each condition will consist of eight 10-25 minute treatment sessions. Participants will complete two sessions per week for four weeks and will be administered assessments at pre-treatment, one week post-treatment and at 3-month follow-up. We hypothesize that: 1) IBM will lead to greater reductions in BDD symptoms than the PMR condition; 2) IBM will lead to greater reductions in depression, anxiety and suicidal ideation than the PMR condition; 3) IBM will lead to greater reductions in threat interpretations and greater increases in benign interpretations than the PMR condition; 4) The effects of condition on BDD symptoms will be mediated by changes in BDD-related interpretation bias; and 5) The effects of training in the IBM condition will be maintained at the 3-month follow-up assessments.
Interventions
BEHAVIORALInterpretation Bias Modification
Eight 10-25 minute sessions of interpretation modification to reduce negative interpretation biases related to appearance.
BEHAVIORALProgressive Muscle Relaxation
Eight 15-minute sessions of progressive muscle relaxation (PMR).
Sponsors
Florida State University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Investigator)
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No
Inclusion criteria
* Current diagnosis of Body Dysmorphic Disorder according to DSM-5 criteria * BDD-YBOCS score greater than or equal to 20 * Fluent in English * No significant physical defect or flaw in appearance (e.g., disfiguration)
Exclusion criteria
* History of psychotic disorder, bipolar disorder, borderline personality disorder * Current substance use disorder * Unstable medication status (i.e. change in medication within the last month) * Concurrent psychotherapy for appearance concerns * Active and clinically significant suicidality
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Yale-Brown Obsessive Compulsive Scale Modified for Body Dysmorphic Disorder (BDD-YBOCS; Phillips et al., 1997) | change from baseline at one-week post treatment and 3-months post-treatment | Measures past-week BDD symptom severity |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Beck Depression Inventory (BDI-II; Beck, Steer, & Brown, 1996) | change from baseline at one-week post treatment and 3-months post-treatment | Measures depressive symptom severity |
| Beck Anxiety Inventory (BAI; Steer & Beck, 1997) | change from baseline at one-week post treatment and 3-months post-treatment | Measure anxious symptom severity |
| Depressive Symptom Index-Suicidality Subscale | change from baseline at one-week post treatment and 3-months post-treatment | Measure severity of recent suicidality |
| Body Dysmorphic Disorder Word Sentence Association Paradigm (BDD-WSAP; modified from Hindash & Amir, 2011) | change from baseline at one-week post treatment and 3-months post-treatment | Measure of strength of BDD-related (i.e. evaluation- and appearance- related threat interpretation biases) |
Countries
United States
Outcome results
None listed