Behavioral inhibition and obsessive-compulsive disorder

Behavioral inhibition is frequently cited as a vulnerability factor for development of anxiety. However, few studies have examined the unique relationship between behavioral inhibition and obsessive-compulsive disorder (OCD). Therefore, the current study addressed the relationship between behavioral inhibition and OCD in a number of ways. In a large unselected student sample, frequency of current OC symptoms was significantly correlated with retrospective self-reports of total levels of childhood behavioral inhibition. In addition, frequency of current OC symptoms was also significantly correlated with both social and nonsocial components of behavioral inhibition. Further, there was evidence for a unique relationship between behavioral inhibition and OC symptoms beyond the relationship of behavioral inhibition and social anxiety. In addition, results showed that reports of childhood levels of behavioral inhibition significantly predicted levels of OCD symptoms in adulthood. Finally, preliminary evidence suggested that behavioral inhibition may be more strongly associated with some types of OC symptoms than others, and that overprotective parenting may moderate the impact of behavioral inhibition on OC symptoms. The current findings suggest the utility of additional research examining the role of behavioral inhibition in the etiology of OCD.     

Pharmacotherapy of childhood obsessive-compulsive disorder

OCD appears in children and adolescents in virtually the same form as adults. Antipsychotics, anxiolytics, and antidepressants (other than CMI and other serotonergic reuptake blockers) are not consistently helpful in treating OCD. Adult controlled studies have found that CMI, a serotonin reuptake blocker, is selectively and specifically effective for treating OCD. The two controlled studies of CMI in a pediatric sample found that CMI was significantly better than placebo and desipramine in ameliorating the symptoms of OCD. CMI appears to be safe, well tolerated, and effective for OCD at dosages targeting 3 mg per kg per day in children and adolescents. Further studies of its use in long-term maintenance are indicated. Based on anecdotal information, fluoxetine appears to be promising for use in OCD, although it is currently only approved for use as an antidepressant in adults. Fluvoxamine, which has not been tried in a pediatric population, appears to be efficacious for adult OCD. Controlled studies of their safety and efficacy in the pediatric population need to be done. The long-term prognosis for children with OCD is unknown. It appears that all treatment modalities should be utilized, including psychopharmacologic, behavioral, and other psychotherapeutic interventions.     

Approach and avoidance learning in obsessive-compulsive disorder

Background: Current neurobiological models of obsessive–compulsive disorder (OCD) propose a dysfunction of cortico‐striato‐thalamo‐cortical circuits that leads to enhanced activity in frontal and striatal brain regions. In accordance with that, OCD patients show alterations in learning and flexible adaptation to changing task requirements. The purpose of this study was to examine feedback‐based learning and to investigate whether learning from positive and negative feedback is differentially altered in OCD. Methods: In this study, 18 OCD patients and 18 healthy comparison subjects conducted a probabilistic selection task. The task consisted of an acquisition and a test phase and allowed disentangling the extent of learning based on positive and negative feedback. Results: Groups did not differ during probabilistic feedback learning in the acquisition phase. In the test phase, OCD patients showed a negative learning bias in contrast to comparison subjects who showed a positive learning bias. Patients were better at avoiding stimuli that were initially associated with negative outcomes than at approaching stimuli that were associated with positive feedbacks. This interaction was also found for reaction times in that patients were faster in avoiding negative and slower in approaching positive stimuli. Conclusion: Enhanced avoidance learning was found in OCD patients that points to exaggerated anticipation and avoidance of aversive outcomes. Further studies are required to investigate whether neurobiological mechanisms, such as dopaminergic signaling or outcome processing, in the orbitofrontal cortex relate to enhanced negative learning in OCD. Depression and Anxiety, 2011. © 2010 Wiley‐Liss, Inc.     

Behavioral responses to a dopaminergic challenge in obsessive-compulsive disorder

The behavioral response to an intravenous methylphenidate challenge was evaluated in five patients with obsessive-compulsive disorder. The affective response was heterogeneous, ranging from dysphoria to mood elevation with abreaction. Stereotypic movements were noted. Three of the five subjects experienced a marked worsening (1.6- to 24-fold increase) in their obsessive-compulsive symptoms, and failed to respond to a subsequent treatment trial with fluvoxamine, a 5-HT reuptake inhibitor. These preliminary findings highlight the need to investigate the role of the dopaminergic system in the pathophysiology of obsessive-compulsive disorder.     

Cognitive-behavioral family treatment of childhood obsessive-compulsive disorder: a controlled trial

OBJECTIVE: To evaluate the relative efficacy of (1) individual cognitive-behavioral family-based therapy (CBFT); (2) group CBFT; and (3) a waitlist control group in the treatment of childhood obsessive-compulsive disorder (OCD). METHOD: This study, conducted at a university clinic in Brisbane, Australia, involved 77 children and adolescents with OCD who were randomized to individual CBFT, group CBFT, or a 4- to 6-week waitlist control condition. Children were assessed before and after treatment and at 3 months and 6 months following the completion of treatment using diagnostic interviews, symptom severity interviews, and self-report measures. Parental distress, family functioning, sibling distress, and levels of accommodation to OCD demands were also assessed. Active treatment involved a manualized 14-week cognitive-behavioral protocol, with parental and sibling components. RESULTS: By an evaluable patient analysis, statistically and clinically significant pretreatment-to-posttreatment change occurred in OCD diagnostic status and severity across both individual and group CBFT, with no significant differences in improvement ratings between these conditions. There were no significant changes across measures for the waitlist condition. Treatment gains were maintained up to 6 months of follow-up. CONCLUSIONS: Contrary to previous findings and expectations, group CBFT is as effective in reducing OCD symptoms for children and adolescents as individual treatment. Findings support the efficacy and durability of CBFT in treating childhood OCD.     

Open trial of cognitive behavior therapy for childhood obsessive-compulsive disorder

Examined the utility of CBT for childhood obsessive-compulsive disorder (OCD) including a preliminary exploration of predictors of response to this form of treatment. A total of 42 youngsters (mean age 11.8 years, 60% female, 52% on medication at baseline) with DSM-IV OCD were treated openly using a developmentally sensitive treatment protocol based on exposure plus response prevention (ERP). The treatment response rate (CGI < 2) was 79% with a mean decrease from baseline in NIMH global scores of 45%. Response was not related to age, gender, baseline medication status, comorbid symptomatology, or therapist experience. Poorer outcome was associated with more severe obsessions and greater OCD-related academic impairment at baseline. When presented in a developmentally appropriate manner, CBT is a useful treatment for childhood OCD. Controlled trials are needed to provide a more rigorous test of this treatment approach and provide better information regarding potential mediators and moderators of outcome.     

Cognitive-behavioral family treatment of childhood obsessive-compulsive disorder: preliminary findings

The effectiveness of a 14-week cognitive-behavioral family treatment protocol for childhood obsessive-compulsive disorder (OCD) was piloted using a volunteer sample of seven children aged 10-14 years. The primary outcome measures were diagnostic status, symptom severity, and global functioning which were assessed at pre- and post-treatment, and at three-month follow-up. A series of self-report measures assessing obsessive-compulsive symptomatology, depression, and family factors were also completed at pre- and post-treatment. The results indicated that six participants no longer met criteria for OCD at post-treatment, with a mean reduction of 60% in symptom severity. Self-reported obsessive-compulsive symptomatology and family involvement in the disorder also significantly decreased across time. The findings support the efficacy of cognitive-behavioral treatment with a structured family component for childhood OCD. Further research investigating the comparative efficacy of treatment with and without family involvement is warranted.     

Classification of obsessive-compulsive disorder in childhood and adolescence

OBJECTIVE: In child and adolescent psychiatry the validation of the diagnosis must be seen in the context of development. Comparing different diagnostic formulations DSM-IV and ICD-10-DCR in a clinical sample of children and adolescents suffering from obsessive-compulsive disorder (OCD) and their validation on external criteria represent such a heuristic approach. METHOD: We investigated 61 children seen consecutively in a specialized out-patient clinic for OCD. All of them were assessed by the International Diagnostic Checklists (IDCL). Diagnosis and diagnostic certainty were validated regarding age, age of onset and duration of illness. RESULTS: The agreement between the two diagnostic systems was low. The diagnostic stability of ICD-10-DCR was highly dependent on age, whereas that of the criteria DSM-IV did not depend on age and almost all subjects could be diagnosed definitely. CONCLUSION: This study suggests that the DSM-IV criteria are superior to that of ICD-10-DCR for diagnosing OCD in children and younger adolescents.     

The role of avoidance in the phenomenology of obsessive-compulsive disorder

BackgroundPathologic levels of ritualistic avoidance (also known as active avoidance) are common in the clinical presentation of obsessive-compulsive disorder (OCD). Despite its clinical relevance, there has been little examination of active avoidance as a ritualistic compulsion in adults with OCD.ObjectiveThe objective of this study is to determine if adults with OCD who engage in ritualistic avoidance have greater obsessive-compulsive, anxiety, and depressive symptom severity and different comorbidity patterns than adults who do not engage in ritualistic avoidance.MethodAdults with OCD (n = 133) completed an evaluation that included clinician ratings of obsessive-compulsive severity; overall illness severity; and self-reported ratings of anxiety, depression, and obsessive-compulsive severity.ResultsRitualized avoidance was endorsed by greater than 25% of the sample. Avoidant subjects and, more specifically, contaminant avoidant and reading-writing avoidant subjects presented with elevated levels of obsessive-compulsive symptom severity and greater overall clinical severity than comparison patients who did not engage in each respective avoidance ritual.ConclusionsPatients who engage in ritualized avoidance exhibited greater obsessive-compulsive symptom severity than patients who did not. These findings suggest that ritualized avoidance functions as a compulsion for adults with OCD and that avoidance should receive careful consideration in assessment and treatment.     

Cognitive-behavioral family treatment for childhood obsessive-compulsive disorder: A 7-year follow-up study

This study evaluated the long-term durability of individual and group cognitive-behavioral family-based therapy (CBFT) for childhood obsessive-compulsive disorder (OCD). Thirty-eight participants (age 13–24 years) from a randomized controlled trial of individual or group CBFT for childhood OCD were assessed 7 years post-treatment. Diagnostic, symptom severity interviews and self-report measures of OCD, anxiety, and depression were administered. Seven years after treatment, 79% of participants from individual therapy and 95% from group therapy had no diagnosis of OCD. These results are near identical to results found at 12 and 18 months follow-ups of the same sample. No significant differences were found between treatment conditions, self-reports of symptom severity, except that depressive symptoms were significantly more pronounced for individual treatment condition, and those in the older age group (19–24 years of age). Results suggest that CBFT for obsessive-compulsive disorder is effective 7 years post-treatment.     

Childhood obsessive-compulsive disorder: a review

Obsessive-compulsive disorder (OCD) holds a particular interest for child psychiatrists because of the high proportion of cases with onset in childhood and adolescence. Over the last two decades, substantial progress has been made in describing OCD in children and adolescents and in developing and implementing effective treatments. In addition, research on the phenomenology, neurobiology, and psychopharmacology of OCD has led to its current conceptualization as a developmental neuropsychiatric disorder. In this article, the fourth in a series on OCD, the authors summarize the most recent data on the phenomenology, etiology, neurobiology, and treatment of OCD in children and adolescents.     

Biochemical changes during clomipramine treatment of childhood obsessive-compulsive disorder

Peripheral measures of serotonergic and noradrenergic function were obtained in 29 obsessive-compulsive adolescents and 31 age- and sex-matched controls, as well as in a subsample of 22 patients after five weeks of treatment with clomipramine hydrochloride (134 +/- 33 mg/d) (mean +/- SD) given in a double-blind placebo-controlled trial. Drug-free obsessive-compulsive subjects did not differ from controls on measures of platelet serotonin and monoamine oxidase (MAO) activity, nor on plasma epinephrine or norepinephrine concentrations at rest and after a standard orthostatic challenge procedure. Compared with placebo, treatment with clomipramine was clinically effective and produced a marked decrease in platelet serotonin concentration, a trend toward a reduction in platelet MAO activity, and a rise in standing plasma norepinephrine. Clinical improvement during drug therapy was closely correlated with pretreatment platelet serotonin concentration and MAO activity, as well as with the decrease in both measures during clomipramine administration. This suggests that the effects of clomipramine on serotonin uptake may be essential to the antiobsessional action observed.     

Behavioral treatment in two cases of obsessive-compulsive disorder with concomitant bipolar affective disorder

The authors describe two cases of obsessive-compulsive disorder with concomitant bipolar affective disorder. Behavior therapy consisting of in vivo exposure plus response prevention controlled the obsessive-compulsive symptoms only after the affective illness was well controlled pharmacologically.     

Dimensional approach to obsessive-compulsive disorder in childhood and adolescence

Based on a review of the charts of child and adolescent psychiatric patients, a group of patients with obsessive-compulsive symptoms and a control group were identified. Obsessive-compulsive symptoms described in the charts were classified according to form using the checklist of Khanna et al. By use of latent trait models, a 6-item obsessive-compulsive rating scale was established revealing a dimensional rather than a categorical distribution of obsessive-compulsive symptoms. The correlation with other clinical features was investigated.     

Behavioral and experiential avoidance in patients with hoarding disorder

Background and objectives

This study examined the relationship between experiential and behavioral avoidance and hoarding symptom severity, controlling for anxiety and depression symptoms, in 66 adult individuals (M age = 61.41; SD = 9.03) with HD.

Methods

Hierarchical regression was used to test the associations between hoarding severity, as defined by the Savings Inventory-Revised (SI-R) total and its three subscales, and avoidance, as defined by the Acceptance and Action Questionnaire II (AAQ-II) and two scales from the Brief COPE (Self-Distraction and Behavioral Disengagement) when controlling for anxiety and depression symptoms.

Results

Experiential avoidance (AAQ-II) and behavioral avoidance (Brief COPE subscales Self-Distraction and Behavioral Disengagement) uniquely accounted for aspects of hoarding severity (SI-R) in regression models. Behavioral avoidance contributed significant additional variance to the SI-R Clutter subscale, whereas experiential avoidance was uniquely predictive of additional variance in the SI-R Difficulty Discarding and the SI-R Acquisition subscales.

Limitations

Future research should examine the effect of experiential avoidance on hoarding behaviors experimentally.

Conclusions

Given that the AAQ-II and Self-Distraction and Behavioral Disengagement subscales were not correlated, these findings suggest that experiential and behavioral avoidance are two distinct processes contributing to the severity of specific HD. Results support the utility of avoidance in the cognitive-behavioral model for HD.     

Schizophrenia with obsessive-compulsive disorder and obsessive-compulsive disorder with poor insight: a neuropsychological comparison

Schizophrenia patients with obsessive-compulsive disorder (OCD) may be a subgroup of schizophrenia, and OCD patients with poor insight may show psychotic-like symptoms. The aim of this work is to compare the neuropsychological performance of those patients with schizophrenic patients who do not have OCD symptoms and with OCD patients who have good insight. The sample consisted of 89 patients (16 OCD-schizophrenic patients, 30 non-OCD schizophrenic patients, 30 OCD patients with good insight, 13 OCD patients with poor insight). Neuropsychological evaluation included executive functions, verbal and visual memory and attention tasks. While schizophrenic patients with OCD did not differ from the non-OCD schizophrenia and OCD with poor insight groups on long-term visual and verbal memory performance, they showed poorer performance than the OCD group on long-term visual and verbal memory tests. Considering executive function, the OCD group with poor insight performed significantly worse than their counterparts with good insight, and the latter group performed better than the schizophrenia patients. The results of this study suggest that the neuropsychological performance of schizophrenia patients with OCD did not differ from that of non-OCD schizophrenic patients, and that OCD patients with poor insight were more likely to share similar cognitive characteristics with the schizophrenia groups. Our results also provide neuropsychological support for the hypothesis that OCD and schizophrenia may be a spectrum disorders.