Cognitive behavioral treatments of obsessive–compulsive disorder. A systematic review and meta-analysis of studies published 1993–2014

Neurocognitive performance in the context of acute symptom reduction in OCD: Treatment effects and the impact of BDNF

BACKGROUND

Obsessive-compulsive disorder (OCD) has been associated with neurocognitive impairments. The present study examined the effect of treatment on neurocognitive performance in OCD and the relationship between neurocognitive change and symptom change. The present study also examined polymorphisms influencing brain derived neurotrophic factor (BDNF) as predictors of neurocognitive change.

METHOD

Treatment-seeking participants with OCD (N = 125) were assigned to cognitive behavioural therapy (CBT) alone, CBT combined with regular physical exercise, exercise alone, or a waitlist control group. Measures of OCD symptom severity and a neuropsychological battery were completed pre- and post-treatment. Blood or saliva samples were used to genotype the BDNF Val66Met polymorphism.

RESULTS

OCD symptom severity was not cross-sectionally associated with neurocognitive performance. Several neurocognitive measures improved over treatment. The BDNF Val66Met polymorphism was significantly associated with worse performance on the Stroop test but did not significantly predict change in neurocognitive performance over time.

LIMITATIONS

Limitations include lack of a healthy control group.

CONCLUSION

Improvement in neurocognitive performance corresponded to symptomatic improvement and was independent of the BDNF Val66Met genotype.

A concentrated approach for treating OCD: a pilot study examining the feasibility and potential effectiveness of the Bergen Four Day Treatment in the U.S

The Bergen Four Day Treatment (B4DT) is a concentrated treatment for OCD that has demonstrated promising effectiveness in Nordic country samples. The B4DT is delivered over four days and provides individual treatment in a group context. The effectiveness of the B4DT for OCD has not been tested outside Nordic countries. The current pilot study evaluated the feasibility and the potential effectiveness of B4DT in a different culture and health-care system in the United States. Findings from 48 adults with OCD who completed the B4DT indicated that OCD, anxiety, and depression symptom severity significantly decreased from pre- to post-treatment, and gains were maintained at six month follow-up. The Yale-Brown Obsessive Compulsive Scale scores were reduced from moderate to subclinical; specifically, the average scores of 27.0 (pre-treatment) fell to 11.7 (post-treatment), 12.7 (3-month follow-up), and 13.7 (6-month follow-up). The B4DT was rated as highly acceptable by the US patients. Over 95% of the patients stated that they would recommend the treatment to a friend. These findings provide the first preliminary evidence for the generalizability of the B4DT to patients outside Nordic countries. Cultural and context-dependent issues that affected this dissemination pilot study are discussed in addition to future clinical and research directions.

The effectiveness of psychological treatments for obsessive-compulsive disorders: a meta-analysis of randomized controlled trials published over last 30 years

BACKGROUND

Although numerous studies have examined the effects of psychological treatments for obsessive-compulsive disorder (OCD), their overall effectiveness remains unclear. We aimed to estimate their overall effect by combining all available randomized controlled trials (RCTs) comparing psychological treatments to control groups for OCD.

METHODS

We conducted a meta-analysis of 48 RCTs with 55 comparisons published between 1992 and 1 January 2023. The primary outcome was OCD symptom severity, with Hedges' g calculated at post-treatment and follow-up. Random-effects models were employed for all analyses, and the risk of bias was assessed.

RESULTS

In general, psychological treatments demonstrated a significantly large effect (g = -1.14; 95% CI [-1.31 to -0.97]; I2 = 72.23%) on reducing OCD symptom severity post-treatment, this finding remained consistent across measures and after excluding outliers, but lost significance in the sensitivity analysis for only studies with low risk of bias. Type of treatment, control group and treatment format were associated with treatment effects. Moreover, more severe baseline OCD symptom severity predicted higher degree of treatment efficacy. No significant differences were observed in dropout rates between the treatment and control groups. Treatment effects lost significance at 3-6 and 6-12 month follow-ups. 87% of RCTs were rated at high risk of bias.

CONCLUSIONS

Psychological treatments are effective in reducing OCD symptom severity. However, caution should be exercised when interpreting these results due to the high heterogeneity and risk of bias across RCTs. Future studies with more rigorous methodology are required, as well as studies examining their long-term effectiveness.

Acceptability of internet-delivered cognitive behavioural therapy for adults with symptoms of obsessive-compulsive disorder: A meta-analysis

OBJECTIVES

Obsessive-compulsive disorder (OCD) is a chronic mental health disorder. Internet-delivered cognitive behaviour therapy (ICBT) is demonstrated to be effective for OCD; however little is known about the acceptability of the treatment. Therefore the aim of this study was to examine the acceptability of ICBT for adults with OCD symptoms using a meta-analytic approach.

METHOD

Seventeen studies (N = 1661; Mage range = 28-41 years; 58%-93% female) were included in this analysis.

RESULTS

The random effects pooled estimates indicated that 16.3% (95% CI: 9.8%-25.7%) of participants did not commence the treatment once they were enrolled in the study, 27.6% (95% CI: 19.0%-38.2%) did not complete the treatment, and 27.0% (95% CI: 18.2%-38.0%) did not complete the post-treatment questionnaires of the study. The mean score on the Client Satisfaction Questionnaire ranged from 22.4 to 26.5. Overall, pooled estimates indicated that 81.6% (95% CI: 76.1%-86.0%) of participants were satisfied with the ICBT intervention and 84.7% (95% CI: 72.8%-92.0%) indicated that they would recommend the treatment to a friend. Some of the acceptability moderator analyses indicated that self-guided ICBT interventions had lower levels of acceptability compared with clinician-guided interventions. However, given low power, these results should be considered preliminary.

CONCLUSIONS

This study has important implications in the dissemination of ICBT for OCD.

Online CBT Versus Standard CBT for Pediatric Obsessive-Compulsive Disorder

Obsessive-compulsive disorder (OCD), characterized by recurring obsessions and compulsions, affects 1-3% of the childhood population, often leading to severe impairment and reduced quality of life. Cognitive behavioral therapy (CBT) is well-documented as first choice treatment for pediatric OCD. Traditionally delivered face-to-face CBT has limitations in terms of accessibility, availability, and quality of delivery. Online CBT using video conferencing (online-CBT) at home aims to address some of these barriers. In this pilot study, we aimed to compare acceptability, feasibility and effectiveness of online CBT against face-to-face CBT. Online CBT outcomes of 29 children with OCD were analyzed benchmarked against outcomes of face-to-face CBT (n = 269) from the Nordic Long-term OCD Treatment Study, the largest CBT follow up study in pediatric OCD to date. Acceptability rated by online CBT participants and their parents was very high (Client Satisfaction Questionnaire total scores about 30, range 8-32). Feasibility assessed as dropout rate was comparable to NordLOTS (10.3% versus 9.7%). The online CBT group compared to NordLOTS showed a higher response rate (90% versus 60%; p = .002) and remission rate (81% versus 53%; p = .231). Our results suggest that the trusting therapeutic relationship necessary for demanding exposure-based treatment can be established by online CBT. Online CBT seems to be at least as effective in reducing OCD symptoms than standard CBT. Trial ID: ISRCTN37530113.

From Cognitive Function to Treatment Efficacy in Obsessive-Compulsive Disorder: Insights from a Multidimensional Meta-Analytic Approach

Meta-analysis is a statistical tool used to combine and synthesise the results of multiple independent studies on a particular topic. To this end, researchers isolate important moderators and mediators to investigate their influence on outcomes. This paper introduces a novel approach to meta-analysis, known as multidimensional meta-analysis (mi-MA), to study memory performance in those with obsessive-compulsive disorder (OCD). Unlike traditional meta-analyses, mi-MA allows researchers to extract multiple data points (e.g., using different measures) from single studies and groups of participants, facilitating the exploration of relationships between various moderators while avoiding multicollinearity issues. Therefore, in the first instance, we outline the use of the mi-MA approach to quantify the impact of complex models of memory performance in individuals with OCD. This approach provides novel insights into the complex relationship between various factors affecting memory in people with OCD. By showcasing the effectiveness of mi-MA in analysing intricate data and modelling complex phenomena, the paper establishes it as a valuable tool for researchers exploring multifaceted phenomena, both within OCD research and beyond.

Effects of inpatient, residential, and day-patient treatment on obsessive-compulsive symptoms in persons with obsessive-compulsive disorder: A systematic review and meta-analysis

INTRODUCTION

Patients with severe or treatment-refractory obsessive-compulsive disorder (OCD) often need an extensive treatment which cannot be provided by outpatient care. Therefore, we aimed to estimate the effects and their moderators of inpatient, residential, or day-patient treatment on obsessive-compulsive symptoms in patients with OCD.

METHODS

PubMed, PsycINFO, and Web of Science were systematically screened according to the PRISMA guidelines. Studies were selected if they were conducted in an inpatient, residential, or day-patient treatment setting, were using a number of pre-defined instruments for assessing OCD symptom severity, and had a sample size of at least 20 patients.

RESULTS

We identified 43 eligible studies in which inpatient, residential, or day-patient treatment was administered. The means and standard deviations at admission, discharge, and-if available-at follow-up were extracted. All treatment programs included cognitive-behavioral treatment with exposure and response prevention. Only one study reported to not have used psychopharmacological medication. Obsessive-compulsive symptoms decreased from admission to discharge with large effect sizes (g = -1.59, 95%CI [-1.76; -1.41]) and did not change from discharge to follow-up (g = 0.06, 95%CI [-0.09; 0.21]). Length of stay, age, sex, and region did not explain heterogeneity across the studies but instrument used did: effects were larger for clinician-rated interviews than for self-report measures.

CONCLUSIONS

Persons with OCD can achieve considerable symptom reductions when undertaking inpatient, residential, or day-patient treatment and effects are-on average-maintained after discharge.

Mindfulness as a therapeutic option for obsessive-compulsive disorder

INTRODUCTION

Obsessive-compulsive disorder (OCD) is a prevalent mental health issue characterized by intrusive thoughts (obsessions) and repetitive behaviors (compulsions) that can cause significant life impairment. Despite cognitive-behavioral therapy (CBT) being the most effective treatment, some individuals experience insufficient symptom reduction or relapse.

AREAS COVERED

This special report explores the potential of mindfulness-based interventions as complementary treatments for OCD, examining the specific techniques used and their practical application. In the initial section, the authors examine ten randomized control trial studies included in the meta-analysis conducted by Chien et al. (2022), demonstrating the effectiveness of mindfulness interventions. The authors focus on elucidating the specific mindfulness techniques used in these studies. Then, the authors discuss the integration of these mindfulness strategies into CBT, focusing on enhancing emotional regulation, cognitive flexibility, and acceptance of intrusive thoughts.

EXPERT OPINION

While mindful based interventions (MBIs) show promise as adjunctive treatments for OCD, variability in OCD symptoms and treatment responses necessitate individualized therapeutic approaches. Further research is required to refine mindfulness-based techniques and optimize their effectiveness. Incorporating MBIs into standard CBT protocols may improve outcomes for patients with persistent OCD symptoms.

Assessing the effectiveness of high-definition transcranial direct current stimulation for treating obsessive-compulsive disorder: Results from a randomized, double-blind, controlled trial

OBJECTIVE

Characterized by its disabling nature, obsessive compulsive disorder (OCD) affects individuals profoundly, with nearly 40% of patients showing resistance to initial treatment methods. Despite being safe and easily accessible, transcranial direct current stimulation (tDCS) lacks extensive substantiation supporting its efficacy in treating OCD. The objective of this study was to evaluate how cathodal high-definition transcranial direct current stimulation (HD-tDCS) applied to the right orbitofrontal cortex affected patients with OCD in terms of efficacy.

METHOD

47 patients with OCD were enrolled. They were randomly allocated to active or sham stimulation groups, and underwent HD-tDCS stimulation treatment for 2 weeks. The central electrode located in the right orbitofrontal cortex region was cathodic. The severity of the patients' obsessive-compulsive symptoms, depression and anxiety were assessed before and after treatment.

RESULT

Out of the total, 44 patients concluded the treatment, comprising 23 participants from the active stimulation group and 21 from the sham stimulation group. Notably, substantial reductions in symptoms related to OCD, depression, and anxiety were exhibited in both groups. With a response rate of 26.1% in the active stimulation group and 23.8% in the sham stimulation group, there was no significant difference in efficacy observed. Furthermore, the reduction in depression and anxiety symptoms at the conclusion of the treatment was not notably superior in the active stimulation group.

CONCLUSION

This study provided evidence for the acceptability and safety of HD-tDCS. Nevertheless, the study did not reveal notable clinical effectiveness of tDCS in addressing moderate to severe OCD in comparison to the sham stimulation group.

Multifaceted, Brief Intensive Home-Based Exposure Treatment in Patients with Obsessive-Compulsive Disorder Who are Nonresponsive to Regular Cognitive Behavior Therapy: An Uncontrolled Pilot Study

OBJECTIVE

To test a multifaceted treatment program for patients with obsessive-compulsive disorder (OCD) who did not respond to regular cognitive behavior therapy (CBT). The treatment addresses several factors that may play a role in maintaining OCD.

METHODS

We designed a treatment consisting of a 6-day intensive, individual exposure in vivo with response prevention (ERP) format, with 24 therapist-assisted treatment hours at the patient's home and 12 self-controlled ERP hours, including behavioral activation and family interventions. Next, we investigated the effect (obsessive-compulsive symptoms, comorbidity, functioning, quality of life, OCD-related interaction patterns) and feasibility (dropout, treatment satisfaction, and organization) of this program using pre-post-tests, pre-follow-up tests, and qualitative data from patients, family members, and therapists.

RESULTS

In a sample of 22 participants, obsessive-compulsive symptoms (Y-BOCS pre: 28.7, post: 15.9; Wilcoxon S-R tests P<0.01) improved significantly, as did most other effect measures. Results were largely, but not completely, preserved at 3-month follow-up. There was only 1 dropout. Patients, family members, and therapists were satisfied with the treatment. Implementation of the treatment did not pose difficulties.

CONCLUSIONS

In nonresponders with OCD, a multifaceted, brief, intensive home-based ERP program targeting factors maintaining OCD is promising and feasible. Extra care is needed to maintain improvement.

Willingness to experience unpleasant thoughts, emotions, and bodily sensations at admission does not predict treatment outcome in inpatients with obsessive-compulsive disorder

BACKGROUND

Some persons with obsessive-compulsive disorder (OCD) refuse or drop out of treatment because of the aversive nature of exposure and response prevention therapy when they have to face and tolerate unpleasant thoughts, emotions, and bodily sensations. Indeed, one study suggested that a higher willingness to experience unpleasant thoughts, emotions, and bodily sensations (WTE) predicts a better treatment outcome, but this finding has not been replicated yet.

METHODS

We examined whether WTE at admission predicted treatment outcome in a sample of 324 inpatients with OCD who received a multimodal treatment that included cognitive-behavioral therapy with exposure and response prevention sessions.

RESULTS

Obsessive-compulsive symptoms (based on OCD-specific self-report questionnaires) decreased with medium-to-large effect sizes (all ps < 0.001) and global functioning (based on therapist ratings) increased with a large effect size (d = 1.3, p < 0.001) from admission to discharge. In contrast to previous findings, however, WTE did not predict treatment outcome (all ps > 0.005). The effect of WTE on treatment outcome remained non-significant when controlling for any comorbidity, age, sex, length of stay, and antidepressant medication and was not moderated by these variables.

CONCLUSIONS

Results indicate that higher WTE at the beginning of inpatient treatment does not facilitate improvements in obsessive-compulsive symptoms from admission to discharge. However, they also indicate that lower WTE at the beginning of inpatient treatment does not adversely affect treatment outcome, that is, even patients who indicate that they are unwilling to face the negative experiences associated with exposure and response prevention can still achieve considerable symptom reductions.

Neurocomputational model of compulsivity: deviating from an uncertain goal-directed system

Despite a theory that an imbalance in goal-directed versus habitual systems serve as building blocks of compulsions, research has yet to delineate how this occurs during arbitration between the two systems in obsessive-compulsive disorder. Inspired by a brain model in which the inferior frontal cortex selectively gates the putamen to guide goal-directed or habitual actions, this study aimed to examine whether disruptions in the arbitration process via the fronto-striatal circuit would underlie imbalanced decision-making and compulsions in patients. Thirty patients with obsessive-compulsive disorder [mean (standard deviation) age = 26.93 (6.23) years, 12 females (40%)] and 30 healthy controls [mean (standard deviation) age = 24.97 (4.72) years, 17 females (57%)] underwent functional MRI scans while performing the two-step Markov decision task, which was designed to dissociate goal-directed behaviour from habitual behaviour. We employed a neurocomputational model to account for an uncertainty-based arbitration process, in which a prefrontal arbitrator (i.e. inferior frontal gyrus) allocates behavioural control to a more reliable strategy by selectively gating the putamen. We analysed group differences in the neural estimates of uncertainty of each strategy. We also compared the psychophysiological interaction effects of system preference (goal-directed versus habitual) on fronto-striatal coupling between groups. We examined the correlation between compulsivity score and the neural activity and connectivity involved in the arbitration process. The computational model captured the subjects' preferences between the strategies. Compared with healthy controls, patients had a stronger preference for the habitual system (t = -2.88, P = 0.006), which was attributed to a more uncertain goal-directed system (t = 2.72, P = 0.009). Before the allocation of controls, patients exhibited hypoactivity in the inferior frontal gyrus compared with healthy controls when this region tracked the inverse of uncertainty (i.e. reliability) of goal-directed behaviour (P = 0.001, family-wise error rate corrected). When reorienting behaviours to reach specific goals, patients exhibited weaker right ipsilateral ventrolateral prefronto-putamen coupling than healthy controls (P = 0.001, family-wise error rate corrected). This hypoconnectivity was correlated with more severe compulsivity (r = -0.57, P = 0.002). Our findings suggest that the attenuated top-down control of the putamen by the prefrontal arbitrator underlies compulsivity in obsessive-compulsive disorder. Enhancing fronto-striatal connectivity may be a potential neurotherapeutic approach for compulsivity and adaptive decision-making.

Does mental contamination mediate the association between childhood trauma and obsessive-compulsive symptoms in adults?

BACKGROUND

Previous research has shown that individuals with obsessive-compulsive disorder (OCD) and OCD symptoms have higher rates of childhood trauma. Although it has been suggested that this relationship is due to mental contamination that developed in response to trauma, no studies have investigated the associations between childhood trauma, mental contamination, and OCD, and none have examined whether the relationship between childhood trauma and OCD is mediated by mental contamination.

OBJECTIVE

We hypothesized that OCD, childhood trauma, and mental contamination are positively correlated, and that mental contamination would mediate the association between childhood trauma and OCD symptoms PARTICIPANTS AND SETTING: We tested these hypotheses in a sample of 245 individuals, which comprised 158 MTurk workers recruited via CloudResearch.com and 87 individuals recruited through social media with OCD diagnoses or OCD symptoms above the clinical cutoff on the Obsessive-Compulsive Inventory-Revised.

METHODS

Participants completed online self-report questionnaires on childhood trauma, mental contamination, and OCD symptoms.

RESULTS

The results revealed statistically significant positive correlations between childhood trauma, mental contamination, and OCD, and statistically significant total and indirect effects for the simple mediational model. Exploratory re-analyses with participants who had high OCD symptoms (n = 87) showed similar results.

CONCLUSIONS

Our research shows that the association between childhood trauma and OCD may be explained by mental contamination. We recommend that mental contamination should be assessed and addressed in OCD patients with a history of childhood trauma.

Metacognitive therapy versus exposure and response prevention for obsessive-compulsive disorder - A non-inferiority randomized controlled trial

OBJECTIVE

Exposure with response prevention (ERP) is the first-line treatment for obsessive-compulsive disorder (OCD). However, refusals, dropouts and the required high time and logistic effort constitute barriers to the use of ERP. In a non-inferiority randomized controlled trial, we compared metacognitive therapy (MCT) to exposure with response prevention (ERP) as treatments for OCD.

METHOD

74 outpatients received 12 weekly sessions of either manualized MCT or ERP, with primary outcomes assessed by blinded assessors using the Yale-Brown Obsessive Compulsive Scale (Y-BOCS) at pre-treatment, mid-treatment, post-treatment, and 6-month follow-up. Secondary outcomes included measures of depression and anxiety. Non-inferiority margin was specified at no less than d = 0.38 below the improvement reached by ERP, corresponding to a difference of about 3 points on the Y-BOCS.

RESULTS

Drop-out rates were low (<14%) and similar in both groups. Linear models indicated non-inferiority of MCT to ERP at post-treatment, but not at 6-month follow-up. While both groups showed comparable Y-BOCS improvements, the MCT group demonstrated a significantly greater reduction in state anxiety scores at post-treatment and follow-up.

CONCLUSIONS

Overall, MCT was not inferior to ERP, especially at post-treatment, suggesting it could be a treatment alternative. However, further research is needed to explore differential treatment indications.

A network analysis of mechanisms of change during exposures over the course of intensive OCD treatment

Exposure and response prevention (ERP) is an evidence-based treatment for obsessive-compulsive disorder (OCD). Theories for how it works vary in their emphasis on active mechanisms of change. The current study aimed to clarify mechanisms of change in ERP for OCD using network analysis, comparing ERP networks at the start and end of intensive treatment (partial hospital and residential). In our sample of 182 patients, the most central node in both networks was engagement with exposure, which was consistently related to greater understanding of ERP rationale, higher willingness, and less ritualization, accounting for all other variables in the network. There were no significant differences in networks between the start and end of treatment. These results suggest that nonspecific parameters like facilitating engagement in exposures without ritualizing and providing a clear rationale to clients may be key to effective treatment. As such, it may be useful for clinicians to spend adequate time underscoring the need to eliminate rituals to fully engage in exposure tasks and explaining the rationale for ERP prior to doing exposures, regardless of theoretical orientation. Nonetheless, findings represent group-level statistics and more fine-grained idiographic analyses may reveal individual-level differences with respect to central mechanisms of change. Other limitations include demographic homogeneity of our sample.

Feeling more confident to encounter negative emotions: The mediating role of distress tolerance on the relationship between self-efficacy and outcomes of exposure and response prevention for OCD

BACKGROUND

While exposure and response prevention (ERP) is the first-line treatment for obsessive-compulsive disorder (OCD), up to half of patients do not effectively respond. In an effort to better understand the mechanisms behind ERP, the inhibitory learning model emphasizes the roles of increasing perceived self-efficacy and distress tolerance. While self-efficacy and distress tolerance have separately been shown to predict OCD symptoms and treatment outcomes, no studies have assessed their joint effects in ERP. The current study examined distress tolerance as a mediator of the relationship between self-efficacy and ERP outcomes.

METHODS

Patients in an intensive ERP-based treatment program (N = 116) completed weekly self-report measures.

RESULTS

Over the course of treatment, as OCD symptoms reduced, self-efficacy and distress tolerance both significantly increased. Importantly, increases in self-efficacy and distress tolerance mediated each other in explaining symptom reduction, suggesting a possible bi-directional effect.

LIMITATIONS

The temporal relationship between changes in self-efficacy and distress tolerance is worthy of further investigation. In addition, the current sample had limited racial diversity and might not be representative of patients receiving lower levels of care. Findings merit replication to be ascertained of their reliability.

CONCLUSIONS

Findings suggest that during ERP, patients gain confidence in their abilities both to cope with general challenges and to withstand distress, potentially helping them engage with exposures and overcome initial fears. These findings provide support for the inhibitory learning model and highlight the mechanistic roles of self-efficacy and distress tolerance in ERP. Clinical implications to target both in treatment are discussed.

Patient adherence as a predictor of acute and long-term outcomes in concentrated exposure treatment for difficult-to-treat obsessive-compulsive disorder

BACKGROUND

Exposure and response prevention (ERP) is considered the first-line psychotherapy for obsessive-compulsive disorder (OCD). Substantial research supports the effectiveness of ERP, yet a notable portion of patients do not fully respond while others experience relapse. Understanding poor outcomes such as these necessitates further research. This study investigated the role of patient adherence to ERP tasks in concentrated exposure treatment (cET) in a sample who had previously not responded to treatment or relapsed.

METHOD

The present study included 163 adults with difficult-to-treat OCD. All patients received cET delivered during four consecutive days. Patients' treatment adherence was assessed using the Patient EX/RP Adherence Scale (PEAS-P) after the second and third day of treatment. OCD severity was evaluated at post-treatment, 3-month follow-up, and 1-year follow-up by independent evaluators.

RESULTS

PEAS-P scores during concentrated treatment were associated with OCD-severity at post-treatment, 3-month follow-up, and 1-year follow-up. Moreover, PEAS-P scores predicted 12-month OCD severity adjusting for relevant covariates. Adherence also predicted work- and social functioning at 1-year follow-up.

CONCLUSIONS

These results indicate that ERP adherence during the brief period of cET robustly relates to improvement in OCD symptoms and functioning in both the short and long term. Assessing adherence might identify patients at risk of poor outcomes, while improving adherence may enhance ERP for treatment resistant patients.

TRIAL REGISTRATION

ClinicalTrials.gov identifier: NCT02656342.

The role of between-session homework in cognitive-behavioral therapy for comorbid obsessive-compulsive disorder and autism: A case vignette

OBJECTIVE

Cognitive-behavioral therapy (CBT), which includes a decided emphasis on exposure and response/ritual prevention (ERP) and between-session practice of treatment principles, has consistently demonstrated efficacy for the treatment of obsessive-compulsive disorder (OCD) and is a gold standard, recommended first-line treatment. CBT with ERP has been successfully adapted to fit the needs of autistic individuals with OCD. The present article provides a brief overview of CBT for OCD and outlines special considerations and adaptations needed when working with patients with OCD and comorbid autism, with an emphasis on the importance of between-session homework.

METHOD

A case vignette is presented.

RESULTS

This case study illustrates the role of homework in the exposure-based treatment of an adult autistic individual with comorbid OCD.

CONCLUSION

Implications of this case vignette are discussed, and recommendations are offered for clinicians working with autistic individuals with OCD, especially in regard to bolstering completion of between-session ERP homework.

Long-term remission rates and trajectory predictors in obsessive-compulsive disorder: Findings from a six-year naturalistic longitudinal cohort study

BACKGROUND

This naturalistic study, utilizing data from the Netherlands Obsessive-Compulsive Disorder Association (NOCDA) cohort, investigated the long-term remission rates and predictors of different trajectories of obsessive-compulsive disorder (OCD) within a clinical population.

METHODS

A sample of 213 participants was classified into three illness trajectories: "Chronic," "Episodic, "and "Remitted-OCD." Long-term remission rates were calculated based on three follow-up measurements over a 6-year period. A multinomial logistic regression model, incorporating five selected predictors with high explanatory power and one covariate, was employed to analyze OCD trajectory outcomes.

RESULTS

The long-term full remission rates, calculated from all the measurements combined (14%), were significantly lower than what was observed in earlier studies and when compared to assessments at each individual follow-up (∼30%). Moreover, high baseline symptom severity and early age of onset were identified as significant risk factors for a chronic course of OCD, while male sex and younger age predicted a more favorable trajectory. Notably, the likelihood of an episodic course remained high even without identified risk factors.

LIMITATIONS

The bi-annual data collection process is unable to capture participants' clinical conditions between assessments. Additionally, no data was collected regarding the specific type and duration of psychological treatment received. Regarding the type of treatment participants received.

CONCLUSIONS

Results suggest that long-term remission rates may be lower than previously reported. Consequently, employing multiple assessment points in longitudinal studies is necessary for valid estimation of long-term full remission rates. The results emphasize the importance of personalized clinical care and ongoing monitoring and maintenance for most OCD cases.

Symptom distress and psychosocial functioning improve bidirectionally during cognitive-behavioral therapy for anxiety disorders

The efficacy of cognitive-behavioral therapy (CBT) for reducing anxiety disorder symptoms is well documented. However, limited research has investigated how symptom amelioration is temporally associated with changes in psychosocial functioning, such as interpersonal and social role functioning, during CBT. Participants were 288 (M age = 37.00 [SD = 14.41]; 59.0% female; 69.0% White; 6.6% Hispanic/Latino) outpatients diagnosed with an anxiety disorder who received CBT at a specialized hospital-based clinic. Participants completed the Outcome Questionnaire-45, a measure of symptom distress, social role performance, and interpersonal problems, at initial assessment and prior to each treatment session. Symptom distress and indicators of psychosocial functioning were robustly related during 25 sessions of CBT. Cross-lagged analyses revealed that reductions in symptom distress predicted subsequent improvements in psychosocial functioning during treatment, and vice versa. Associations from symptom distress to subsequent psychosocial functioning evidenced larger effect sizes than the reverse. Lower levels of severity at intake and presence of comorbid depression attenuated the association between symptom reduction and subsequent social role performance improvement. In sum, anxiety symptoms and psychosocial functioning bidirectionally improve during CBT for anxiety disorders. Maximally effective treatments may be those that simultaneously ameliorate symptoms and focus on improving functioning in key domains.

Standardization of the Korean Version of the Acceptance and Action Questionnaire for Obsessions and Compulsions in University Students and Patients With Obsessive-Compulsive Disorder

OBJECTIVE

The Acceptance and Action Questionnaire for Obsessions and Compulsions (AAQ-OC) is a version of the Acceptance and Action Questionnaire (AAQ) that specifically measures unwanted intrusive thoughts and responses (e.g., experiential avoidance) to them. This study aimed to investigate the reliability and validity of the Korean version of the AAQ-OC in clinical and nonclinical Korean samples.

METHODS

In this study, 561 university students and 121 patients with obsessive-compulsive disorder (OCD) completed the AAQ-OC and several other psychological scales. Descriptive, correlation, and exploratory and confirmatory factor analyses as well as group comparisons were conducted.

RESULTS

The results of the exploratory and confirmatory factor analyses indicated a two-factor structure that best fits the data in the university sample: Factors 1 and 2 matched the original Valued Action and Willingness subscales, respectively. The reliability analyses revealed that the AAQ-OC and its factors had excellent internal consistencies. As regards the concurrent validity, the AAQ-OC and its factors had a positive correlation with the AAQ-II and Cognitive Fusion Questionnaire. Compared with the university students, the OCD patients had higher AAQ-OC scores, and their obsessive-compulsive symptoms, particularly the two symptom dimensions of responsibility for harm and mistakes and unacceptable thoughts, were significantly associated with the AAQ-OC and two subscales.

CONCLUSION

The findings of this study confirm the reliability and validity of the Korean version of the AAQ-OC.

A protocol for a randomized controlled trial of exposure and response prevention for veterans with obsessive compulsive disorder

BACKGROUND

Obsessive compulsive disorder (OCD) is effectively treated with exposure and response prevention (ERP), yet very few veterans receive ERP for OCD within the Veterans Health Administration (VHA). Veterans are a clinically complex population, and no prior research has evaluated the effectiveness of ERP in veterans with OCD or comorbid OCD and posttraumatic stress disorder (PTSD). Given the limited accessibility of ERP-trained providers within VHA, assessment of video telehealth (VTH) delivery of ERP is warranted.

METHODS

A sample of 160 veterans with OCD (80 diagnosed with comorbid PTSD) will be randomly assigned to receive up to 16 sessions of ERP or a stress management training control delivered via VTH. Assessments will occur at baseline, posttreatment, and 6-month follow-up. The primary outcome will evaluate the impact of ERP on participants' functioning, and secondary outcomes will include quality of life and OCD symptoms. At posttreatment, qualitative interviews with veterans, clinicians, and administrators will explore barriers and facilitators to treatment delivery, and the implementation potential of ERP.

CONCLUSIONS

Results will provide direction for the treatment of OCD and comorbid PTSD in veterans, as well as guidance for future implementation efforts for ERP within VHA.

CLINICALTRIALS

gov Identifier:NCT05240924.

A systematic review and meta-analysis of the relationship between obsessive-compulsive symptoms and symptoms of proposed orthorexia nervosa: The contribution of assessments

OBJECTIVE

This systematic review and meta-analysis aimed to update the literature on orthorexia nervosa (ON), a proposed diagnosis of pathologically 'healthy' eating, by critically analysing the current evidence for the relationship between ON and obsessive-compulsive (OC) symptoms. Further, this paper aimed to compare the ON/OC relationship significance and strength based on when the ON measurement tool was developed.

METHOD

PsycINFO, PubMed and Web of Science databases were queried for quantitative, peer-reviewed studies recruiting adult participants, published in English up to April 2023. Studies not directly comparing ON and OC symptoms were excluded. After full-text review and quality assessment, 40 studies were included in the systematic review and 31 studies in the meta-analysis.

RESULTS

ON assessments created prior to the 2016 revised ON diagnostic criteria do not appear to fully capture OC symptoms. Studies using earlier developed ON assessments demonstrated inconsistent ON/OC relationships whereas studies implementing more recent assessments (from 2018 onwards) found consistently significant, larger relationships, highlighting a previously underrated OC component of ON.

CONCLUSIONS

Early ON studies, and studies utilising early ON assessments should be interpreted with caution, particularly in relation to OC symptom involvement in ON. Future research should validate novel ON assessments and investigate common underlying factors.

Potential biomarkers and therapeutic targets for obsessive compulsive disorder: Evidences from clinical studies

Obsessive compulsive disorder (OCD) is a prevalent behavioral disorder with a complex etiology. However, the underlying pathogenic molecular pathways and the associated risk factors are largely obscure. This has hindered both the identification of relevant prognostic biomarkers and the development of effective treatment strategies. Because of the diverse range of clinical manifestations, not all patients benefit from therapies currently practiced in the clinical setting. Nevertheless, several lines of evidence indicate that neurotrophic, neurotransmitter, and oxidative signaling are involved in the pathophysiology of OCD. Based upon evidences from clinical (and pre-clinical studies), the present review paper sets out to decipher the utilities of three parameters (i.e. brain-derived neurotrophic factor; BDNF, noradrenalin-synthesizing enzyme dopamine beta-hydroxylase; DBH; and oxidative damage marker malondialdehyde; MDA) as diagnostic peripheral biomarkers as well as bio-targets for therapeutic strategies. While the data indicates promising results, there is necessitation for future studies to further confirm and establish these. Further, based again on the available clinical data, we investigated the possibilities of exploiting the etiological links between disruptions in the sleep-wake cycle and insulin signaling, and OCD for the identification of potential anti-OCD ameliorative agents with the ability to elicit multimodal effects, including attenuation of the alterations in BDNF, noradrenergic and redox pathways. In this respect, agomelatine and metformin may represent particularly interesting candidates; however, further clinical studies are warranted to establish these as singular or complementary medications in OCD subjects.

Neuronal correlates of intensification and acceptance of symptoms during exposure therapy in patients with obsessive-compulsive disorder

Introduction

Cognitive behaviour therapy with exposure and response prevention is efficient in treating patients with obsessive-compulsive disorder (OCD). Nevertheless, it would be helpful for many patients to complement the therapeutic treatment with acceptance strategies to further increase the therapeutic benefit. The aim of the present study was to examine neurobiological responses to acceptance and intensification strategies during symptom provocation alongside the psychotherapeutic process.

Method

A total of 23 patients diagnosed with OCD (subtype: washing/contamination fear) was instructed to utilise either an acceptance strategy (ACS) or an intensification strategy (INS) to cope with their emotional and cognitive reactions to personalised symptom-triggering and neutral pictures. Fourteen patients participated twice: at the beginning [T1] and at the end [T2] of an inpatient multimodal treatment including cognitive behaviour therapy with response prevention to assess functional variations.

Results

For the contrast of T1 and T2, ACS showed increased brain activity in the left inferior frontal gyrus (IFG), left caudate body, and posterior cingulate gyrus (PCC). They also showed decreased activity in the left anterior insula. INS showed decreased activation in right lingual gyrus and right caudate body. At T2, ACS showed increased activation compared to INS in the left cerebrum: IFG, caudate nucleus, middle and superior temporal gyrus, and PCC/cuneus. For the comparison of T1 and T2, the ACS revealed increased brain activity in the left IFG, left caudate body, and right inferior parietal lobe. It showed decreased activity in the left anterior insula. The INS revealed decreased activity in right lingual gyrus and right caudate body.The psychometric questionnaires suggested that patients were able to reduce obsession, compulsion, and depression symptoms. Furthermore, patients rated the ACS as more useful for themselves compared with the INS.

Conclusion

The increased left IFG activity using ACS (T1 vs. T2) could be interpreted as a better inhibitory top-down process, while the increased PCC response might be due to a better reappraisal strategy after therapy. ACS seems to mobilise neuronal activations under therapy, especially in the left hemisphere. Both strategies showed reductions in emotional networks as a neuronal correlate of therapy success. Overall, ACS may be more efficient than INS, as rated by the patients and as in accordance with neurobiological findings.

Cognitive behavior therapy for adult eating disorders in routine clinical care: A systematic review and meta-analysis

OBJECTIVE

Cognitive behavior therapy (CBT) is a recommended treatment for eating disorders (ED) in adults given its evidence, mainly based on efficacy studies. However, little is known about how CBT works in routine clinical care. The goal of the present meta-analysis is to investigate how CBT works for various ED when carried out in routine clinical settings.

METHOD

Ovid MEDLINE, Embase OVID, and PsycINFO were systematically searched for articles published until June 2023. The outcome of CBT, methodological quality, risk of bias (RoB), and moderators of treatment outcome were examined and benchmarked by meta-analytically comparing with efficacy studies for ED. Fifty studies comprising 4299 participants who received CBT were included.

RESULTS

Large within-group effect sizes (ES) were obtained for ED-psychopathology at post-treatment (1.12), and follow-up (1.22), on average 9.9 months post-treatment. Attrition rate was 25.5% and RoB was considerable in the majority of studies. The benchmarking analysis showed that effectiveness studies had very similar ESs as efficacy studies (1.20 at post-treatment and 1.28 at follow-up).

CONCLUSION

CBT for ED is an effective treatment when delivered in routine clinical care, with ESs comparable to those found in efficacy studies. However, the evidence needs to be interpreted with caution due to the RoB in a high proportion of studies.

PUBLIC SIGNIFICANCE

Eating disorders are common in the population and often lead to multiple negative consequences. CBT has been found effective for ED and is recommended in clinical guidelines. Since these recommendations are primarily based on university studies we wanted to investigate how CBT performs in routine clinical care. Our meta-analysis found that CBT worked as well in routine care as in university setting studies.

What's control got to do with it? A systematic review of control beliefs in obsessive-compulsive disorder

Current conceptualizations of control-related beliefs in Obsessive-Compulsive Disorder (OCD) have largely been limited to beliefs about the need to control thoughts. Although growing evidence supports the notion of considering broader control-related constructs in this disorder, there has been limited research aimed at integrating findings across studies, making it difficult to determine how different control-related beliefs may influence OCD symptoms. The current review sought to systematically analyze findings from all studies investigating the relationship between control beliefs and OCD. The systematic search identified 157 eligible articles that assessed the relationship between control beliefs and OCD symptoms. Results suggested that certain control beliefs (e.g., importance of/need to control of thoughts, sense of control, beliefs about losing control) may be more closely associated with OCD than others (e.g., locus of control, and desire for control). In general, control beliefs were positively associated with OCD, with effect sizes ranging from small to large depending on the symptom domain. Based on limited studies, the only control belief which demonstrated specificity to OCD was ICT. Findings support the importance of integrating additional control beliefs in conceptualizations of OCD and provide evidence to support the benefits of targeting these beliefs in cognitive behavioural therapy.

The promise and challenges of transcranial magnetic stimulation and deep brain stimulation as therapeutic options for obsessive-compulsive disorder

INTRODUCTION

Obsessive compulsive disorder (OCD) represents a complex and often difficult to treat disorder. Pharmacological and psychotherapeutic interventions are often associated with sub-optimal outcomes, and 40-60% of patients are resistant to first line therapies and thus left with few treatment options. OCD is underpinned by aberrant neurocircuitry within cortical, striatal, and thalamic brain networks. Considering the neurocircuitry impairments that underlie OCD symptomology, neurostimulation therapies provide an opportunity to modulate psychopathology in a personalized manner. Also, by probing pathological neural networks, enhanced understanding of disease states can be obtained.

AREAS COVERED

This perspective discusses the clinical efficacy of TMS and DBS therapies, treatment access options, and considerations and challenges in managing patients. Recent scientific progress is discussed, with a focus on neurocircuitry and biopsychosocial aspects. Translational recommendations and suggestions for future research are provided.

EXPERT OPINION

There is robust evidence to support TMS and DBS as an efficacious therapy for treatment resistant OCD patients supported by an excellent safety profile and favorable health economic data. Despite a great need for alternative therapies for chronic and severe OCD patients, resistance toward neurostimulation therapies from regulatory bodies and the psychiatric community remains. The authors contend for greater access to TMS and DBS for treatment resistant OCD patients at specialized sites with appropriate clinical resources, particularly considering adjunct and follow-up care. Also, connectome targeting has shown robust predictive ability of symptom improvements and holds potential in advancing personalized neurostimulation therapies.

Safety, feasibility, tolerability, and clinical effects of repeated psilocybin dosing combined with non-directive support in the treatment of obsessive-compulsive disorder: protocol for a randomized, waitlist-controlled trial with blinded ratings

Background

To date, few randomized controlled trials of psilocybin with non-directive support exist for obsessive-compulsive disorder (OCD). Results and participant feedback from an interim analysis of an ongoing single-dose trial (NCT03356483) converged on the possibility of administering a higher fixed dose and/or more doses of psilocybin in future trials for presumably greater benefits.

Objectives

This trial aims to evaluate the safety, feasibility, tolerability, and clinical effects of two doses of psilocybin paired with non-directive support in the treatment of OCD. This trial also seeks to examine whether two doses of psilocybin lead to greater OCD symptom reduction than a single dose, and to elucidate psychological mechanisms underlying the effects of psilocybin on OCD.

Design

A randomized (1:1), waitlist-controlled design with blinded ratings will be used to examine the effects of two doses of oral psilocybin paired with non-directive support vs. waitlist control on OCD symptoms. An adaptive dose selection strategy will be implemented (i.e., first dose: 25 mg; second dose: 25 or 30 mg).

Methods and analysis

This single-site trial will enroll 30 adult participants with treatment-refractory OCD. Aside from safety, feasibility, and tolerability metrics, primary outcomes include OCD symptoms assessed on the Yale-Brown Obsessive-Compulsive Scale - Second Edition (Y-BOCS-II). A blinded independent rater will assess primary outcomes at baseline and the primary endpoint at the end of the second dosing week. Participants will be followed up to 12 months post-second dosing. Participants randomized to waitlist will be rescreened after 7 weeks post-randomization, and begin their delayed treatment phase thereafter if still eligible.

Ethics

Written informed consent will be obtained from participants. The institutional review board has approved this trial (protocol v. 1.7; HIC #2000032623).

Discussion

This study seeks to advance our ability to treat refractory OCD, and catalyze future research seeking to optimize the process of psilocybin treatment for OCD through understanding relevant psychological mechanisms.Clinical trial registration: ClinicalTrials.gov, identifier NCT05370911.

Depressive symptoms during deep transcranial magnetic stimulation or sham treatment for obsessive-compulsive disorder

BACKGROUND

Evidence suggests that depressive symptoms tend to improve concurrently with obsessive-compulsive disorder (OCD) symptoms during cognitive behavioral therapy (CBT), despite depression not being the primary target of intervention. Studies examining the temporal or mediational relationships of OCD and depressive symptoms have indicated a bidirectional relationship, as prior levels of OCD symptoms influenced subsequent levels of depression, and vice versa. Deep transcranial magnetic stimulation (dTMS) has recently emerged as a treatment option for OCD. Whether dTMS affects depression symptoms similarly to CBT remains to be examined.

METHODS

The current study employed a random intercept cross-lagged panel model (RI-CLPM) to examine the relationship of OCD and depression symptoms in 94 treatment refractory patients, undergoing dTMS or sham treatment.

RESULTS

Both OCD and depression symptoms improved significantly. However, a stable, cross-lagged relationship between the variables was not supported. Changes in one symptom domain could not be used to predict the other.

LIMITATIONS

The present study was conducted in a treatment refractory population, meaning the present findings may not generalize to treatment naïve patients or those with less severe OCD symptoms. It is unclear whether the study was sufficiently powered to detect the effects of interest, and this concern also meant that examining the dTMS and sham groups independently was not feasible.

CONCLUSIONS

When treating OCD with dTMS, depression symptoms appear likely to diminish but should be monitored throughout, and additional interventions applied if needed.

Management of Mental Health Challenges in Athletes: Screening, Pharmacology, and Behavioral Approaches

Athletes are incredibly motivated and perpetually pursuing dominance in skill, strength, endurance, and execution-often while balancing many additional responsibilities. Despite the appearance of living fun, luxurious, care-free lifestyles, they are vulnerable to exceptional stressors and the same mental health challenges as the general population. The use of screening tools and assessment guided by a biopsychosocial framework can assist in understanding the factors that contribute to the athlete's mental health status. This can facilitate the development of a targeted management approach to mental health challenges.

The efficacy of telephone-delivered cognitive behavioral therapy in people with chronic illnesses and mental diseases: A meta-analysis

COVID-19 pandemic led to an increase of remote treatments, such as telephone-delivery cognitive behavioral therapy (T-CBT). To our knowledge, no meta-analyses studied the effect of T-CBT in chronic and/or mental illnesses on multiple psychological outcomes. Therefore, our study aims to evaluating the efficacy of T-CBT compared to other interventions (treatment as usual, TAU, or face-to-face CBT). Each effect size (ES) was calculated in Hedges' g and pooled together to produce a mean ES for each outcome (depression, anxiety, mental and physical QoL, worry, coping, and sleep disturbances). The meta-analysis included 33 studies with a randomized controlled trial design. A large ES was found when comparing the efficacy of T-CBT against TAU on depression (g = 0.84, p < 0.001), whereas a moderate ES was found on anxiety (g = 0.57; p < 0.001), and a small effect on mental quality of life (g = 0.33, p < 0.001), sleep disturbances (g = 0.37, p = 0.042), coping (g = 0.20, p = 0.016) and worry (g = 0.43, p = 0.001). The meta-analysis comparing the efficacy of T-CBT and CBT on depression revealed a not significant pooled ES (g = 0.06, p = 0.466). The results provided evidence that T-CBT could be to be more effective than TAU conditions in multiple psychological outcomes, and as efficient as face-to-face CBT in treating depression.

Neural mechanisms of acceptance-commitment therapy for obsessive-compulsive disorder: a resting-state and task-based fMRI study

BACKGROUND

There is growing evidence for the use of acceptance-commitment therapy (ACT) for the treatment of obsessive-compulsive disorder (OCD). However, few fully implemented ACT have been conducted on the neural mechanisms underlying its effect on OCD. Thus, this study aimed to elucidate the neural correlates of ACT in patients with OCD using task-based and resting-state functional magnetic resonance imaging (fMRI).

METHODS

Patients with OCD were randomly assigned to the ACT (n = 21) or the wait-list control group (n = 21). An 8-week group-format ACT program was provided to the ACT group. All participants underwent an fMRI scan and psychological measurements before and after 8 weeks.

RESULTS

Patients with OCD showed significantly increased activation in the bilateral insula and superior temporal gyri (STG), induced by the thought-action fusion task after ACT intervention. Further psycho-physiological interaction analyses with these regions as seeds revealed that the left insular-left inferior frontal gyrus (IFG) connectivity was strengthened in the ACT group after treatment. Increased resting-state functional connectivity was also found in the posterior cingulate cortex (PCC), precuneus, and lingual gyrus after ACT intervention Most of these regions showed significant correlations with ACT process measures while only the right insula was correlated with the obsessive-compulsive symptom measure.

CONCLUSIONS

These findings suggest that the therapeutic effect of ACT on OCD may involve the salience and interoception processes (i.e. insula), multisensory integration (i.e. STG), language (i.e. IFG), and self-referential processes (i.e. PCC and precuneus). These areas or their interactions could be important for understanding how ACT works psychologically.

Study protocol for a single-blind, parallel-group, randomised, controlled non-inferiority trial of 4-day intensive versus standard cognitive behavioural therapy for adults with obsessive-compulsive disorder

INTRODUCTION

Individual cognitive behavioural therapy (CBT) with exposure and response prevention is an effective treatment for obsessive-compulsive disorder (OCD). However, individual CBT is costly and time-consuming, requiring weekly therapy sessions for 3-4 months. A 4-day intensive version of CBT for OCD delivered in group format has been recently developed in Norway (Bergen 4-day treatment, B4DT). B4DT has shown promising results in several uncontrolled and one small, randomised trial, but its non-inferiority to the gold standard treatment has not been established.

METHODS AND ANALYSIS

This single-blind, randomised controlled trial including 120 patients (60 per arm) will compare B4DT to individual CBT. The primary outcome is the blind assessor-rated Yale-Brown Obsessive Compulsive Scale (Y-BOCS). We hypothesise that B4DT will be non-inferior to gold standard CBT 15 weeks after treatment start. The non-inferiority margin is set at four points on the Y-BOCS. Secondary outcomes include time to treatment response, cost-effectiveness, response and remission rates, drop-out rates and adverse events.

ETHICS AND DISSEMINATION

This study has been approved by the Swedish Ethical Review Authority. Hypotheses were specified and analysis code published before data collection started. Results from all analyses will be reported in accordance with the Consolidated Standards of Reporting Trials statement for non-pharmacological trials and Consolidated Health Economic Evaluation Reporting Standards irrespective of outcome.

TRIAL REGISTRATION NUMBER

NCT05608278.

Effects of acceptance-based strategies on psychological responses to disorder-relevant stimuli in inpatients with obsessive-compulsive disorder: An experimental study

BACKGROUND AND OBJECTIVES

Preliminary findings suggest that acceptance and commitment therapy-informed exposure therapy may be an effective treatment for obsessive-compulsive disorder (OCD). However, there is a lack of experimental studies that have examined immediate effects of acceptance-based strategies during exposure to disorder-relevant stimuli in persons with OCD.

METHODS

Fifty-three inpatients (64% female) with OCD participated in an experimental study during which they were exposed to obsessive-compulsive washing-relevant pictures and were instructed to either passively view these pictures for 5 s (neutral condition), to accept their feelings (acceptance condition) or to intensify their feelings (exposure condition) for 90 s each.

RESULTS

The acceptance condition led to higher acceptance and lower unpleasantness of patients' current feelings compared to the neutral condition and to lower strength of obsessions and urge to perform compulsions but only when compared to the exposure condition. Higher self-reported OCD symptom severity related to higher unpleasantness and strength of obsessions, particularly in the neutral condition.

LIMITATIONS

Future studies need to test whether the current findings translate to other stimuli and other forms of obsessions and compulsions. Due to the short duration, the exposure condition might have only mimicked the early phase of exposure and response prevention.

CONCLUSIONS

Acceptance-based strategies during cue exposure immediately increase acceptance of and reduce unpleasant feelings. In line with the rationale of acceptance-based treatment approaches, which do not aim at immediate disorder-specific symptom reductions, effects on obsessions and compulsions may be more delayed or require repeated training sessions.

Insight in obsessive-compulsive disorder: conception, clinical characteristics, neuroimaging, and treatment

Obsessive-compulsive disorder (OCD) is a chronic disabling disease with often unsatisfactory therapeutic outcomes. The fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) has broadened the diagnostic criteria for OCD, acknowledging that some OCD patients may lack insight into their symptoms. Previous studies have demonstrated that insight can impact therapeutic efficacy and prognosis, underscoring its importance in the treatment of mental disorders, including OCD. In recent years, there has been a growing interest in understanding the influence of insight on mental disorders, leading to advancements in related research. However, to the best of our knowledge, there is dearth of comprehensive reviews on the topic of insight in OCD. In this review article, we aim to fill this gap by providing a concise overview of the concept of insight and its multifaceted role in clinical characteristics, neuroimaging mechanisms, and treatment for OCD.

Predictors of the 6-year outcome of obsessive-compulsive disorder: Findings from the Netherlands Obsessive-Compulsive Disorder Association study

OBJECTIVE

Obsessive-compulsive disorder is characterized by a chronic course that can vary between patients. The knowledge on the naturalistic long-term outcome of obsessive-compulsive disorder and its predictors is surprisingly limited. The present research was designed to identify clinical and psychosocial predictors of the long-term outcome of obsessive-compulsive disorder.

METHODS

We included 377 individuals with a current diagnosis of obsessive-compulsive disorder, who participated in the Netherlands Obsessive Compulsive Disorder Association study, a multicenter naturalistic cohort study. Predictors were measured at baseline using self-report questionnaires and clinical interviews. Outcome was assessed using the Yale-Brown Obsessive Compulsive Scale at 2-, 4- and 6-year follow-up.

RESULTS

The overall course of obsessive-compulsive disorder was characterized by two prominent trends: the first reflected an improvement in symptom severity, which was mitigated by the second, worsening trend in the long term. Several determinants affected the course variations of obsessive-compulsive disorder, namely, increased baseline symptom severity, late age of onset, history of childhood trauma and autism traits.

CONCLUSION

The long-term outcome of obsessive-compulsive disorder in naturalistic settings was characterized by an overall improvement in symptom severity, which was gradually halted to the point of increased worsening. However, after 6 years, the severity of symptoms remained below the baseline level. While certain determinants predicted a more favorable course, their effect diminished over time in correspondence to the general worsening trend. The results highlight the importance of a regular and continuous monitoring for symptom exacerbations as part of the management of the obsessive-compulsive disorder, regardless of the presence of putative predictors.

A Systematic Review of the Use of Acceptance and Commitment Therapy to Treat Adult Obsessive-Compulsive Disorder

The present review aims to critically evaluate available literature on the use of acceptance and commitment therapy (ACT) to treat adult obsessive-compulsive disorder (OCD) and to draw conclusions about using ACT to reduce OCD symptoms in adults with OCD. Databases (PsycINFO, PsycARTICLES, MEDLINE, and PubMed), Google Scholar, and article references were used to identify relevant studies through October 10, 2020. This review includes both peer-reviewed, published articles (n = 15) and unpublished theses and dissertations (n = 2) to increase the breadth of the review as suggested by PRISMA guidelines. Reviewed articles utilized ACT and at least one measure of OCD symptom severity. Information on methodological, measurement, statistical, and analytical characteristics of the included studies were extracted to determine the quality of the available studies and to inform the conclusions of this review. Seventeen studies (n = 17) with 336 participants from three countries were evaluated. The current evidence suggests that ACT can be used to reduce symptoms of OCD in adults. A conclusion supporting the use of ACT to reduce OCD symptoms can be made because of several strengths within this body of literature (e.g., use of validated OCD symptom measures, inclusion of treatment manuals, use of multiple assessment points, etc.). However, because a majority of the included studies are quasi-experimental and single-subject studies, more stringent research (i.e., randomized controlled trials) with large, diverse samples is needed to strengthen this conclusion. Additionally, dismantling studies exploring the components of ACT that lead to OCD symptom improvement are needed.

A targeted strategic peer support intervention to increase adherence to video teletherapy exposure and response prevention treatment for obsessive-compulsive disorder: a retrospective observational analysis

Exposure and response prevention (ERP) therapy, a form of cognitive-behavioral therapy, is a first-line, evidence-based treatment for obsessive-compulsive disorder (OCD) for adults and children. It is effective for the majority of those who engage in it, but treatment adherence can be challenging for some due to the stress involved in the treatment as well as different life circumstances that arise. To help improve treatment adherence, NOCD, a provider of video teletherapy ERP, identifies those at risk of non-adherence using a prediction algorithm trained on a data set of N = 13,809 and provides targeted peer support interventions by individuals ("Member Advocates") who successfully completed ERP treatment for OCD. Member Advocates, using lived OCD experience as well as experience with ERP, engage at-risk patients through digital messaging to engage, educate, and encourage patients in the early stages of treatment. From June 2022 to August 2022, N = 815 patients deemed at risk were reached out to and n = 251 responded and engaged with the Member Advocates. In the at-risk patients who engaged, the intervention resulted in a significant mean 30.4% more therapy hours completed compared to those who did not engage. Additionally, engaged patients had greater reductions in OCD severity. These results have implications for how data science, digital interventions, and strategic peer-to-peer communication and support can be combined to enhance the effectiveness of treatment.

Toward a synthesis of cognitive behaviour therapy via component analysis of self-regulation

The cognitive behavioural therapies (CBTs) are the choice psychotherapies for many clinicians treating a wide range of adult psychological disorders including various anxieties, mood, substance use, eating, schizophrenia and personality-related. Empirical research in the CBTs is ever increasing, and the accumulating evidence supporting efficacious treatments is substantial and well documented. However, with prolific research comes a seemingly accelerating and worrying trend of purportedly different therapies, and numerous hybrids and combinations of therapies and techniques. For many clinicians this is increasingly confusing and not helpful in clinical practice. This article is a critique of current trends and directions in clinical research, which show signs of limited effectiveness, fragmentation, and obfuscation. An alternative strategy is proposed-examining transdiagnostic therapeutic effects, which appear related to treating pervasive dysregulated emotions, with component analyses of four principal self-regulation components (viz., self-monitoring; functional analysis; identifying values, goals and treatment-plans; and feedback). Such a strategy is likely to lead to a more coherently synthesized and effective CBT.

Delivery of Exposure and Response Prevention Among Veterans with Obsessive-Compulsive Disorder

Veterans with obsessive-compulsive disorder (OCD) often face barriers to receiving evidence-based treatments such as exposure and response prevention (ERP). Through retrospective review of electronic medical records, this study examined the rates of ERP delivery in a national sample of 554 veterans newly diagnosed with OCD in the Veterans Health Administration between 2016 and 2017. Results indicated that only 4% of veterans (n = 22) received any ERP treatment; and, of those, 16 veterans received "true ERP." Veterans who received any ERP were younger than those who did not. ERP was primarily delivered by psychologists in urban facilities along the East and West coasts of the USA. The findings from this study emphasize the need to train more providers to effectively deliver ERP in addition to providing telehealth services to increase access to care for veterans in rural areas.

Online versus in-person delivery of cognitive behaviour therapy for obsessive compulsive disorder: An examination of effectiveness

Cognitive behavioural therapy (CBT) including exposure and response prevention is the first-line psychological treatment for obsessive compulsive disorder (OCD). Given changes in the clinical landscape, there are increasing efforts to evaluate its effectiveness in online contexts. Mirroring the traditional in-person delivery, few studies have assessed the role of therapist-guided, manual-based CBT for OCD delivered in real-time via videoconferencing methods. The present study sought to fill this gap by comparing in-person and online delivery of group-based CBT for the treatment of OCD. A convenience sample of participants with moderate to severe OCD (n = 144) were recruited from a naturalistic database from two large OCD specialty assessment and treatment centres. Patients received group-based CBT that was provided in-person (pre-COVID-19 pandemic; March 2018 to March 2020) or online via videoconferencing (during the COVID-19 pandemic; March 2020 to April 2021). In both delivery methods, treatment consisted of 2-h weekly sessions led by trained clinicians. Analyses revealed that, regardless of treatment modality, both in-person and online groups demonstrated significant, reliable, and statistically equivalent improvements in OCD symptoms post-treatment. Videoconferenced, clinician-led CBT may be a promising alternative to in-person delivery for those with moderate to severe OCD symptoms.

A study of doubt in obsessive-compulsive disorder

BACKGROUND AND OBJECTIVES

Obsessive-compulsive disorder (OCD) has been referred to as the "doubting disease," yet there has been little foundational research on its phenomenology and characteristics. Studies of doubt have relied on researchers' idiosyncratic conceptualizations of the construct, resulting in varied assessment methods and different prevalence rates (11-75%). We examined the nature and characteristics of doubt in people with clinical and subclinical OCD so as to identify its nature and characteristics, and factors that may be unique to OCD.

METHODS

A semi-structured interview about doubt was administered to people with OCD (N = 44) and with subclinical OCD (N = 21).

RESULTS

Doubt was highly prevalent and manifested as a form of obsession, uncertainty about whether a task was done properly, and/or lack of confidence in memory and perceptions. All participants took action to resolve doubt and/or proactively pre-empt or reduce future doubt. Doubt was deeply connected to negative core beliefs about the self. The groups did not differ on their experience of doubt, except that greater symptom severity was associated with greater interference from doubt, less ability to resist it, and less success of proactive, but not reactive, strategies to manage it.

LIMITATIONS

We relied on retrospective report, and the subclinical group was relatively small.

CONCLUSIONS

In subclinical and clinical OCD, doubt is pervasive, manifests in three domains, is connected to negative core beliefs, and is highly aversive. Continued empirical study of doubt is essential to proper assessment and to development of theories and treatment of OCD.

Self-help application for obsessive-compulsive disorder based on exposure and response prevention technique with prototype design and usability evaluation: A cross-sectional study

Background and Aims

Obsessive-compulsive disorder (OCD) is a relatively common disorder that, due to its debilitating nature, significantly affects personal abilities, job performance, social adjustment, and interpersonal relationships. There are significant barriers to accessing evidence-based cognitive-behavioral therapy as a first-line treatment for obsessive-compulsive disorder. Mobile health applications (Apps) offer a promising way to improve access to evidence-based therapies while overcoming these barriers. The present study was to design and evaluate a prototype of a self-help application for people with OCD (the most common pattern of OCD) based on the exposure and response prevention (ERP) technique.

Methods

This work was developed in four different phases. (1) Needs assessment: a thorough literature review, reviewing existing related programs and apps, and interviewing patients and psychiatrists; (2) Creating a paper prototype: considering the functional features identified in the previous phase using wireframe sketcher software. (3) Creating a digital prototype: developing an actual prototype using Axure RP software based on the information obtained from an expert panel's evaluation of the paper prototype. (4) Prototype usability evaluation: through a heuristic evaluation with experts and usability testing with patients using the SUS questionnaire.

Results

After requirement analysis, requirements were defined in the areas of information and educational elements, and functional capabilities. Prototypes designed based on identified requirements include capabilities such as in-app online self-help groups, assessing the severity of the symptoms of the disorder, psychological training, supportive treatment strategies, setting personalized treatment plans, tracking treatment progress through weekly reports provided, anxiety assessment, and setting reminders.

Conclusion

The results of the heuristic evaluation with experts made it possible to identify how to provide information and implement the capabilities in a way that is more appropriate and easier for the user.

The effect of aerobic exercise alone and in combination with cognitive behavioural therapy on obsessive compulsive disorder: A randomized control study

PURPOSE

Cognitive behavioural therapy (CBT) has been found to be an effective treatment for OCD, but there remains a significant proportion of individuals who fail to show a treatment response. Aerobic exercise has previously been associated with decreases in anxiety and depression, as well as improvements in OCD symptoms in small-scale studies. The purpose of the present research was to use a randomized control trial design to examine the effects of exercise alone and in combination with CBT, on OCD symptoms and secondary symptoms.

METHOD

125 participants were randomly assigned to one of four treatment groups: waitlist control, exercise, CBT, and CBT with exercise. OCD symptom severity was measured at four points over the course of treatment, secondary outcome measures were gathered at three points over treatment.

RESULTS

CBT alone and combined with exercise was associated with significantly greater OCD symptom reduction than exercise alone or the control groups. Total exercise frequency predicted OCD symptom reduction in the groups in which exercise was measured. Group membership did not significantly predict reductions in secondary outcome measures.

CONCLUSION

Exercise frequency, rather than the presence or absence of exercise, appears to predict OCD symptom reduction, as did participation in CBT.

Hair pulling disorder and skin picking disorder have relatively limited associations with negative emotionality: A meta-analytic comparison across obsessive-compulsive and related disorders

The obsessive-compulsive and related disorders (OCRD) chapter in DSM-5 includes two relatively distinct groups of disorders: (1) Compulsive disorders [i.e., obsessive-compulsive disorder (OCD), body dysmorphic disorder (BDD), hoarding disorder (HD)] and (2) grooming disorders [i.e., skin picking disorder (SPD) and hair pulling disorder (HPD)]. The two groups may relate differently with negative emotionality; however, the literature has produced mixed findings. The current study sought to quantify the concurrent association between negative emotionality and each of the five OCRDs. We conducted systematic reviews of research reporting correlations between (1) negative emotionality (i.e., depression, anxiety, stress, negative affect, and neuroticism) and (2) severity of OCRD symptoms in both clinical and non-clinical adult samples. We used three-level meta-analytic models to estimate the size of the correlations. Negative emotionality had robust positive correlation with symptoms of OCD [k = 156, r = 0.44, 95% CI= 0.43-0.46], BDD [k = 58, r = 0.45, 95% CI= 0.43-48], and HD [k = 67, r = 0.39, 95% CI= 0.36-0.42] but significantly smaller correlation with SPD [k = 31, r = 0.31, 95% CI= 0.27-0.34] and HPD [k = 24, r = 0.28, 95% CI= 0.25-0.32]. Overall, the results indicate that grooming disorders have relatively limited associations with negative emotionality. Implications for classification of OCRDs within the broader taxonomy of psychopathology are discussed.

Intraoperative valence testing to adjudicate between ventral capsule/ventral striatum and bed nucleus of the stria terminalis target selection in deep brain stimulation for obsessive-compulsive disorder

OBJECTIVE

Deep brain stimulation (DBS) is an accepted therapy for severe, treatment-refractory obsessive-compulsive disorder (trOCD). The optimal DBS target location within the anterior limb of the internal capsule, particularly along the anterior-posterior axis, remains elusive. Empirical evidence from several studies in the past decade has suggested that the ideal target lies in the vicinity of the anterior commissure (AC), either just anterior to the AC, above the ventral striatum (VS), or just posterior to the AC, above the bed nucleus of the stria terminalis (BNST). Various methods have been utilized to optimize target selection for trOCD DBS. The authors describe their practice of planning trajectories to both the VS and BNST and adjudicating between them with awake intraoperative valence testing to individualize permanent target selection.

METHODS

Eight patients with trOCD underwent awake DBS with trajectories planned for both VS and BNST targets bilaterally. The authors intraoperatively assessed the acute effects of stimulation on mood, energy, and anxiety and implanted the trajectory with the most reliable positive valence responses and least stimulation-induced side effects. The method of intraoperative target adjudication is described, and the OCD outcome at last follow-up is reported.

RESULTS

The mean patient age at surgery was 41.25 ± 15.1 years, and the mean disease duration was 22.75 ± 10.2 years. The median preoperative Yale-Brown Obsessive Compulsive Scale (Y-BOCS) score was 39 (range 34-40). Two patients had previously undergone capsulotomy, with insufficient response. Seven (44%) of 16 leads were moved to the second target based on intraoperative stimulation findings, 4 of them to avoid strong negative valence effects. Three patients had an asymmetric implant (1 lead in each target). All 8 patients (100%) met full response criteria, and the mean Y-BOCS score reduction across the full cohort was 51.2% ± 12.8%.

CONCLUSIONS

Planning and intraoperatively testing trajectories flanking the AC-superjacent to the VS anteriorly and to the BNST posteriorly-allowed identification of positive valence responses and acute adverse effects. Awake testing helped to select between possible trajectories and identify individually optimized targets in DBS for trOCD.

Cognitive behavior therapy for adult post-traumatic stress disorder in routine clinical care: A systematic review and meta-analysis

Although different cognitive behavioral therapies (CBT) have strong research support for treatment of adult post-traumatic stress disorder (PTSD) more knowledge is needed about the performance of CBT in routine clinical care. The present study is a systematic review and meta-analysis of CBT for PTSD in adults treated in routine clinical care. Ovid MEDLINE, Embase OVID, and PsycINFO were systematically searched for studies published until the end of May 2022. The effectiveness of CBT, methodological quality, and moderators of treatment outcome were examined, and benchmarked by meta-analytically comparing with efficacy studies for PTSD. Thirty-three studies, comprising 6482 participants, were included. The within-group effect sizes (ES) for PTSD-severity at post-treatment (1.75), and follow-up (1.70), on average 6 months post-treatment, were large. The effectiveness studies had very similar ESs as efficacy studies at post-treatment (1.75 vs. 1.72) and follow-up (1.70 vs. 2.02), based on the benchmarking analysis. As the heterogeneity was large, we can only cautiously consider CBT for PTSD an effective treatment when delivered in routine clinical care. The outcomes of effectiveness studies for PTSD seem to be comparable to the results obtained in efficacy studies. PROSPERO REGISTRATION ID: CRD42021228828.