Comorbid obsessive-compulsive personality disorder in obsessive-compulsive disorder (OCD): a marker of severity

Introduction

Comorbid obsessive-compulsive personality disorder (OCPD) is well-described in obsessive-compulsive disorder (OCD). It remains unclear, however, whether OCPD in OCD represents a distinct subtype of OCD or whether it is simply a marker of severity in OCD.

Materials and methods

The aim of this study was to compare a large sample of OCD subjects (n = 403) with and without OCPD on a range of demographic, clinical and genetic characteristics to evaluate whether comorbid OCPD in OCD represents a distinct subtype of OCD, or is a marker of severity.

Results

Our findings suggest that OCD with and without OCPD are similar in terms of gender distribution and age at onset of OC symptoms. Compared to OCD − OCPD (n = 267, 66%), those with OCD + OCPD (n = 136, 34%) are more likely to present with the OC symptom dimensions which reflect the diagnostic criteria for OCPD (e.g. hoarding), and have significantly greater OCD severity, comorbidity, functional impairment, and poorer insight. Furthermore there are no differences in distribution of gene variants, or response to treatment in the two groups.

Conclusion

The majority of our findings suggest that in OCD, patients with OCPD do not have a highly distinctive phenomenological or genetic profile, but rather that OCPD represents a marker of severity.     

亚临床强迫症与首发强迫症患者抑制功能比较

目的比较亚临床强迫症、首发强迫症患者与正常对照抑制功能的差异。方法采用连线测验（TMT）、Stroop测验、威斯康星卡片分类测验（WCST）评估35例亚临床强迫症和35例首发强迫症患者,以及年龄和教育程度匹配的35例正常对照。结果（1）与正常对照比较,亚临床强迫组wCST测验中WCST完成分类数、WCST正确数,Stroop测验中读字色（Stroop-CW）的正确数,TMT测验中TMT-B完成时间测验成绩明显低于正常对照组,差异有统计学意义（P〈0．05）,与强迫症患者组比较差异无统计学意义（P〉0．05）;与正常对照比较,强迫症患者组Stroop测验中Stroop-CW错误数、TMT测验中TMT-A完成时间成绩明显差于正常组,差异具有统计学意义（P〈0．05）,与亚临床强迫症组比较差异有统计学意义（P〈0．01）;（2）相关分析显示,强迫症组患者组的病程与TMT-B完成时间呈正相关（r=0．277,P=0．004）。结论亚临床强迫症和首发强迫症患者存在抑制功能受损,执行功能损害在强迫症发生发展中起着重要作用。     

Negative priming (cognitive inhibition) in obsessive-compulsive disorder (OCD)

Cognitive disinhibition has been implicated in the pathogenesis of obsessive-compulsive disorder (OCD). Negative priming (NP) is regarded to tap into this function. While early studies indeed found reduced negative priming in OCD, attempts to replicate are both scarce and equivocal. Moreover, several studies in favor of the disinhibition hypothesis are plagued by methodological limitations. For the present investigation, 18 participants with OCD and 28 healthy controls underwent a computerized NP experiment with varying response-stimulus intervals. In addition, a variant of the paradigm with concurrent item presentation was employed to rule out the confounding impact of memory. Negative priming was comparable between groups yielding small between-group effect sizes. The present study challenges broad claims of disinhibition in OCD. In our view, the disinhibition account faces theoretical problems. Instead, theories implicating cognitive biases as well as metacognitive problems may more parsimoniously explain the idiosyncratic nature of OCD symptoms.     

Comorbidity between obsessive-compulsive disorder (OCD) and personality disorders

The aims of the present study were to examine the frequency of personality disorders in 36 patients with obsessive-compulsive disorder (OCD), and to investigate whether patients with a coexisting personality disorder could be characterized by certain personality traits assessed by means of the Karolinska Scales of Personality (KSP). In total, 27 (75%) of the OCD patients fulfilled the DSM-III-R criteria for a personality disorder, and 13 patients (36%) had an obsessive-compulsive personality disorder. Subjects with a comorbid personality disorder had significantly higher scores on most of the KSP scales, including all anxiety scales, as well as scales measuring indirect aggression, irritability, guilt and detachment, whereas subjects without personality disorders did not differ significantly from healthy controls with regard to personality traits.     

Case series: transformation obsession in young people with obsessive-compulsive disorder (OCD)

This article presents a previously unreported symptom of obsessive-compulsive disorder. The young people reported describe a fear of turning into someone or something else or taking on unwanted characteristics. We have called this transformation obsession. The bizarre nature of this obsession had led to misdiagnosis and inappropriate treatments in a number of these patients. Recognition of this symptom as an ordinary obsession (unwanted, intrusive, repetitive, and associated with an anxiety-reducing compulsion or avoidance) facilitates treatment with cognitive-behavioral therapy for obsessive-compulsive disorder. Consideration is given to screening for this obsession and whether its presence indicates a subtype of obsessive-compulsive disorder.     

Sensitive domains of self-concept in obsessive-compulsive disorder (OCD): further evidence for a multidimensional model of OCD

Aspects of self-concept have been implicated in recent empirical and theoretical investigations of obsessive-compulsive disorder (OCD). This article extends previous theory and research by investigating the proposal that specific self-structures may be linked with OCD [e.g., Doron, G., & Kyrios, M. (2005). Obsessive-compulsive disorder: a review of possible specific internal representations within a broader cognitive theory. Clinical Psychology Review, 25, 415-432]. In particular, it was hypothesized that individuals who value the domains of morality, job and scholastic competence, and social acceptability, but who feel incompetent in these domains (i.e., "sensitive" domains of self), would hold a greater level of OC-related beliefs and display more OC-symptoms. The study was performed in 198 non-clinical participants, using a multidimensional measure of self-concept. As predicted, it was found that sensitivity in the four domains was related to higher levels of OC-related beliefs. Sensitivity in the domains of morality, job competence and social acceptability also related to higher levels of OC-symptoms. Further, these findings were generally maintained when controlling for global self-worth. Based on these results, it is argued that sensitivity of self-concept may be associated with OC cognitions and phenomena. Implications for theory and treatment are discussed.     

Autism spectrum traits in children and adolescents with obsessive-compulsive disorder (OCD)

OBJECTIVE: Assess the prevalence of autistic traits (AST) in pediatric obsessive-compulsive disorder (OCD) and relate them to OCD co-morbidity and compare them with published normative data. METHODS: Pediatric patients with obsessive-compulsive disorder (n=109) according to the DSM-IV were studied using parent ratings of the Autistic Symptom/Syndrome Questionnaire to assess AST symptoms as a continuous rather than categorical trait. The KSADS, a semi-structured psychiatric interview, was used for the psychiatric diagnostic evaluation. Also, the Children's Yale-Brown Obsessive-Compulsive Scale was used to assess OCD severity and other clinical features. RESULTS: AST was common among our patients. Symptom scores were highest in cases with co-morbid Autistic Spectrum Disorders, but cases with other co-morbidities as tics/Tourette and attention/behavioral disorders also scored higher. All sub-groups, including OCD without these co-morbidities scored higher than the Swedish normative group. Using ANOVA, co-morbid ASD and tics/Tourette (plus a term for gender by tic interaction indicating that girls with tics scored high, otherwise low) and pathological doubt contributed (R2=.41) to the AST-traits, while OCD severity and co-morbid anxiety- and depressive disorders did not. CONCLUSION: AST traits are prevalent in OCD and seem to be intricately associated with the co-morbidities as well as the OCD syndrome itself. The findings might have implication for our nosological understanding of OCD which currently is discussed.     

Olanzapine augmentation of fluvoxamine-refractory obsessive-compulsive disorder (OCD): a 12-week open trial

A few studies have tried antipsychotic augmentation in obsessive-compulsive disorder (OCD) patients who are non-responders to selective serotonin reuptake inhibitors. The aim of this study was to investigate the efficacy and tolerability of olanzapine addition to fluvoxamine-refractory OCD patients and to assess if a comorbid chronic tic disorder or a concomitant schizotypal personality disorder was associated with response. Twenty-three OCD non-responders to a 6-month, open-label trial with fluvoxamine (300 mg/day) entered a 3-month open-label trial of augmentation with olanzapine (5 mg/day). OC symptom change was measured with the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) and the Clinical Global Impression (CGI) scale. Differences between responders and non-responders were assessed with regard to age, sex, duration of illness, baseline Y-BOCS score, and comorbidity with chronic tic disorders or schizotypal personality disorder. A significant decrease of mean Y-BOCS score between pre- and post-treatment (26. 8+/-3.0 vs. 18.9+/-5.9) was found at endpoint. Ten patients (43.5%) were rated as responders. The most common side effects were mild to moderate weight gain and sedation. In our sample, three patients (13. 04%) had a chronic motor tic disorder, and four (17.39%) had a codiagnosis of schizotypal personality disorder. Concomitant schizotypal personality disorder was the only factor significantly associated with response. It appears that augmentation of olanzapine in fluvoxamine-refractory OCD may be effective in a large number of patients, including those with comorbid schizotypal personality disorder.     

Categorical and dimensional aspects of co-morbidity in obsessive-compulsive disorder (OCD)

Objective Obsessive-compulsive disorder (OCD) defined at the diagnostic level encompasses divergent symptoms and is often associated with other psychiatric problems. The present study examines OCD versus co-morbid symptom patterns in OCD in children and adolescents in order to investigate the presence of diagnostic heterogeneity. Subjects and methods A total of 113 outpatients with primary OCD participated. The patients’ and primary caretakers’ responses on semi-structured interviews (child version of Schedule for Affective Disorders and Schizophrenia and the Children’s Yale-Brown Obsessive Compulsive Scale) and parents’ responses on the Child Behaviour Checklist were used in the study. Psychiatric diagnoses were related to CBCL syndrome scores and CBCL scores were compared with the Swedish normative data. Results Co-morbid diagnoses were very common and only one out of five patients had only OCD. The most common group was the neuropsychiatric disorders (47%) where tic disorders were most common (27%), especially among boys (40.8%; P = .006, Fisher’s exact test). Also anxiety disorders were common (39.8%) as were affective disorders (24.8%) neither with any gender differences. Diagnoses of disruptive disorders were less common (8.8%), almost exclusively of the oppositional kind (ODD) (8.8%). From the dimensional point of view using the CBCL, patients with OCD scored higher than Swedish youngster generally do, and some gender differences were seen in that girls scored higher on anxiety and depression while both girls and boys had high scores on thought problems, attention problems and especially aggressive behaviour. Comorbidities explained from 25 to 50% scores of the CBCL sub-syndrome scales, often with both main effects and through complex patterns of interaction with gender, OCD-severity and other co-morbid problems. Conclusions While co-morbid problems is an important facet of OCD, sub-syndromal levels of symptoms that can be assessed using a dimensional approach, is a large part of the total symptom burden in these youngsters. Our data indicate contributions of different pathways for girls and for boys for several comorbid problems together with OCD-severity.     

Temperamental factors in children and adolescents with obsessive-compulsive disorder (OCD) and in normal controls

Abstract We studied parent-rated temperamental traits in patients (n=83) with obsessive-compulsive disorder (OCD) as compared with children and adolescents matched for age and gender (n=85) using the EAS (Emotionality, Activity, Sociability) questionnaire. Specifically, two hypotheses of OCD were studied: (1) the presence of behavioural inhibition (BI) and (2) of high levels of emotionality utilising ANOVA analyses, controlling for gender and age group (children vs. adolescents). The presence of BI in OCD patients was confirmed in that they scored higher than controls on Shyness [F (df=7)=2.69, p<0.012] but lower on Activity [F (df=7)=3.01, p<0.005]. Also, our second hypothesis was corroborated in that OCD patients scored higher than controls on Emotionality [F (df=7)=3.59, p<0.001]. A third hypothesis, the presence of temperamental heterogeneity in OCD, was likewise confirmed. We found, using hierarchical cluster analyses, two subgroups of about equal size, an Inhibited/Shy group (n=44), high in Shyness and low in Emotionality, Sociability and Activity, and an Uninhibited group (n=32) that was high in Emotionality, Sociability and Activity, but low in Shyness. However, the temperamental subgroups gave no clear picture with regard to the most common symptom patterns.     

The cost of obsessive-compulsive disorder (OCD) in China: a multi-center cross-sectional survey based on hospitals

BackgroundObsessive-compulsive disorder (OCD) is considered a very debilitating disorder with severe loss of quality of life and income.AimsThis study estimates the quality of life and economic consequences of OCD in China.MethodsThe research team interviewed 639 patients with OCD in 13 hospitals in 12 cities in China. The direct method was used to get the direct cost of OCD. Indirect costs associated with OCD were estimated using the human capital approach. Linear regression analysis was conducted for quality of life and generalised linear model analysis was conducted for total cost. Sensitivity analysis was used to analyse the uncertainty of total cost.ResultsThe mean quality of life score for OCD was 52.78 (20.46). The annual total cost of OCD per capita was 24 503.78 (95% CI: 22 621.53 to 26 386.03) renminbi (RMB) (US$3465.88 (95% CI: US$3199.65 to US$3732.11)). The annual cost of OCD in China was estimated to be 37.74 billion (95% CI: 34.95 billion to 40.53 billion) RMB (equal to US$5.34 billion (95% CI: US$4.94 billion to US$5.73 billion)). Sensitivity analysis showed that the total annual cost of OCD in China was between 23.15 billion RMB (US$3.27 billion) and 370.00 billion RMB (US$52.33 billion). Worse social function status, more psychiatric symptoms and higher Yale Brown Obsessive-Compulsive Scale (Y-BOCS) score were associated with worse quality of life. The numbers of clinic visits and hospitalisations, socioeconomic status, education, Y-BOCS scores and age were found to be significantly associated with total cost.ConclusionsOCD is associated with low quality of life and high costs in China. The findings call for concerted efforts to improve services for patients with OCD.Improvements may include early detection and diagnosis, the provision of evidence-based treatments and relapse prevention strategies.     

Sleep duration and timing in obsessive-compulsive disorder (OCD): evidence for circadian phase delay

ObjectivesTo investigate potential delays in endogenous melatonin in individuals with obsessive-compulsive disorder (OCD).MethodsFirst, data are presented for 15 individuals with OCD and matched healthy controls. Next, nine additional participants with OCD who did not have matched controls were added, resulting in a sample of 24 individuals with OCD. All participants were assessed for sleep and circadian rhythm disturbance. Dim light melatonin onset (DLMO) was derived from salivary melatonin and was used in conjunction with sleep diaries, interview measures, and questionnaires. A subset of the OCD group (n = 16) also used actigraphy.ResultsIn sum, 42% percent (10/24) of the patients with OCD met the criteria for delayed sleep-wake phase disorder (DSWPD) in comparison to 0% in the control sample. DLMO was significantly later in individuals with OCD compared to controls. DLMO and bedtime were not significantly associated with the severity of obsessive-compulsive symptoms or negative affect.ConclusionsReplication of the findings presented herein, particularly the DLMO results, is warranted. Further, there are now three studies showing that nearly ½ of individuals with OCD meet criteria for a DSWPD. Future studies can explore the mechanisms underlying these connections and the implications of this comorbidity. These findings may increase our understanding of OCD and inform future interventions.     

Symptom profiles in pediatric obsessive-compulsive disorder (OCD): The effects of comorbid grooming conditions

This study sought to examine possible differences in phenomenological features and/or symptom severity of children diagnosed with obsessive-compulsive disorder (OCD) and a comorbid grooming condition (i.e., skin picking and trichotillomania). A total of 202 children receiving a primary diagnosis of OCD were classified into two distinct groups: (1) OCD alone (n = 154) and (2) OCD plus a comorbid grooming condition (OCD + grooming; n = 48). Analyses revealed that those children presenting with a comorbid grooming condition demonstrated different symptom profiles than those with OCD alone. In addition, parents of these children were more likely to report the presence of tactile/sensory sensitivity than those in the OCD alone group. However, no differences were found with respect to symptom severity via self-report (e.g., OCI) or semi-structured interview (e.g., CY-BOCS). Possible clinical and treatment implications, future areas of research, and limitations to the present study are discussed.     

Recent life events and obsessive-compulsive disorder (OCD): the role of pregnancy/delivery

Conflicting results have been reported on the possible role of life events in triggering OCD onset. Moreover, pregnancy and/or delivery, among life events, appear to influence the OCD course and, in some cases, appear related to its onset. Our purpose was to assess the occurrence of potentially traumatizing events among patients with OCD. The study also provides an initial exploration of the association between OCD and pregnancy or delivery. The number and type of stressful life events which occurred in the 12 months before the onset of OCD were determined for both OCD patients (N = 68, 33 women and 35 men) and a group of comparison subjects (N = 68, 33 women and 35 men) by using a semistructured interview in accordance with Paykel's list. The results did not show a significant excess of life events in patients compared with healthy subjects. No differences were detected between OCD patients according to gender. When examining the type of events, OCD female individuals were found to be more likely than normal female subjects to report exposure to postpartum events, and high rates of obstetric complications were observed in these patients. Subjects with postpartum OCD had significantly higher rates of aggressive obsessions to harm the newborn. OCD male subjects did not show an association between a specific event and onset of the disorder. The findings confirm that the postpartum period represents a risk factor for OCD in some individuals, and suggest that obstetric complications may be relevant to the development of the disorder.     

Extent, profile and specificity of visuospatial impairment in obsessive-compulsive disorder (OCD)

Recent reviews on the neurocognitive profile of patients diagnosed with obsessive-compulsive disorder (OCD) have converged on the assumption that both visuospatial and especially nonverbal memory performance are impaired in OCD. However, as most prior studies have contrasted performance of OCD patients with healthy controls only, no inferences can yet be drawn about the specificity of these deficits to OCD. Further, the administration of complex and multifunctional tasks limit conclusions about clearly defined cognitive deficits. The present study compared 71 OCD patients to 30 healthy and 33 psychiatric control participants on a large battery of visuospatial and nonverbal memory tasks at two time-points. In addition, a visuospatial battery (VS battery), which assesses a wide range of elementary visuospatial functions, was administered. While OCD patients performed worse than healthy controls on some complex tasks (e.g., Block Design), no visuospatial component proved to be impaired specifically in OCD. OCD patients and controls performed similarly on parameters of nonverbal memory. Regarding organizational strategy, OCD patients performed worse than healthy (but not psychiatric) control participants on two out of three Rey-figure trials (copy and immediate). It is suggested that prior research overestimated the severity and significance of visuospatial and nonverbal memory impairment in OCD.     

Specificity of conditional associative-learning deficits in obsessive-compulsive disorder (OCD) and non-OCD anxiety disorders

The acquisition of conditional associations using neutral and disease-related nouns was studied in 15 inpatients with obsessive-compulsive disorder (OCD), 15 inpatients with non-OCD anxiety disorders and 15 chronic pain inpatients. Patients were comparable with respect to age, sex, depression, intelligence, executive functions, verbal and spatial memory, visuoconstructive functions, and handedness. The investigation took place in the diagnostic phase prior to the patient's beginning a standardized behavioral treatment program. It was hypothesized that anxiety patients acquired disease-related material faster than pain patients but that only OCD patients show inferior performance with respect to neutral stimuli. Results show that the three patient groups were widely comparable concerning neuropsychological background measures and showed equivalent results with respect to disease-related stimuli. But OCD patients yielded an inferior degree of performance when neutral stimuli were used whereas non-OCD anxiety disorder and pain patients displayed an equivalent degree of performance both for neutral and disease-related material, respectively. Results are discussed within the framework of obsessive-compulsive spectrum disorders.     

Psychotherapeutic methods in the treatment of obsessive-compulsive disorder (OCD) in children and adolescents

The psychiatric and psychological literature was systematically reviewed for studies applying psychotherapeutic principles to young persons with obsessive-compulsive disorder. Abundant clinical and empirical evidence suggest that cognitive-behavioral psychotherapy, alone or in combination with pharmacotherapy, is an effective treatment for OCD in children and adolescents. Thirty-two investigations, most of them single case reports, showed some benefit for such kind of interventions. Graded exposure and response prevention form the core of treatment; anxiety management training and specific family interventions may play an adjunctive role.     

Cognitive event-related potentials differentiate schizophrenia with obsessive-compulsive disorder (schizo-OCD) from OCD and schizophrenia without OC symptoms

Clinical and neurobiological evidence suggests that concurrent presentation of schizophrenia and obsessive–compulsive (schizo-OCD) symptoms represents a distinct clinical entity. Given that obsessive-compulsive disorder (OCD) and schizophrenia have been modeled as having different neurofunctional profiles, the overlap between them represents a heuristic challenge for cognitive and endophenotype research. Event-related potentials (ERPs) may be used to probe neurophysiological correlates of the cognitive, emotional and behavioral disturbances found in neuropsychiatric entities such as schizo-OCD. Here we measure ERPs during a discriminative response task (DRT) in patients presenting with the DSM-IV criteria for both schizophrenia and OCD. We also performed these measurements in patients with OCD without psychotic features, as well as in patients with schizophrenia without OC symptoms. Schizo-OCD patients showed a distinct ERP pattern, with abnormally increased target activation (akin to OCD patients, but unlike the pattern observed in schizophrenic patients) and reduced P300 amplitudes (akin to schizophrenic patients, but unlike OCD patients). Similar to the control subjects, schizo-OCD patients showed larger amplitudes in the non-target condition than in the target condition. These results suggest that schizo-OCD may not only be a distinct clinical entity from pure OCD and schizophrenia, but it may also be characterized by a distinguishable neurophysiologic pattern. Neurobiological underpinnings deserve further considerations and might drive to a definition of a distinctive endophenotype for schizo-OCD in the de-construction of the schizophrenia endophenotype.