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Strom NI, Grove J, Meier SM, Bækvad-Hansen M, Becker Nissen J, Damm Als T, Halvorsen M, Nordentoft M, Mortensen PB, Hougaard DM, Werge T, Mors O, Børglum AD, Crowley JJ, Bybjerg-Grauholm J, Mattheisen M. Polygenic Heterogeneity Across Obsessive-Compulsive Disorder Subgroups Defined by a Comorbid Diagnosis. Front Genet 2021; 12:711624. [PMID: 34531895 PMCID: PMC8438210 DOI: 10.3389/fgene.2021.711624] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 07/27/2021] [Indexed: 01/20/2023] Open
Abstract
Among patients with obsessive-compulsive disorder (OCD), 65-85% manifest another psychiatric disorder concomitantly or at some other time point during their life. OCD is highly heritable, as are many of its comorbidities. A possible genetic heterogeneity of OCD in relation to its comorbid conditions, however, has not yet been exhaustively explored. We used a framework of different approaches to study the genetic relationship of OCD with three commonly observed comorbidities, namely major depressive disorder (MDD), attention-deficit hyperactivity disorder (ADHD), and autism spectrum disorder (ASD). First, using publicly available summary statistics from large-scale genome-wide association studies, we compared genetic correlation patterns for OCD, MDD, ADHD, and ASD with 861 somatic and mental health phenotypes. Secondly, we examined how polygenic risk scores (PRS) of eight traits that showed heterogeneous correlation patterns with OCD, MDD, ADHD, and ASD partitioned across comorbid subgroups in OCD using independent unpublished data from the Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH). The comorbid subgroups comprised of patients with only OCD (N = 366), OCD and MDD (N = 1,052), OCD and ADHD (N = 443), OCD and ASD (N = 388), and OCD with more than 1 comorbidity (N = 429). We found that PRS of all traits but BMI were significantly associated with OCD across all subgroups (neuroticism: p = 1.19 × 10-32, bipolar disorder: p = 7.51 × 10-8, anorexia nervosa: p = 3.52 × 10-20, age at first birth: p = 9.38 × 10-5, educational attainment: p = 1.56 × 10-4, OCD: p = 1.87 × 10-6, insomnia: p = 2.61 × 10-5, BMI: p = 0.15). For age at first birth, educational attainment, and insomnia PRS estimates significantly differed across comorbid subgroups (p = 2.29 × 10-4, p = 1.63 × 10-4, and p = 0.045, respectively). Especially for anorexia nervosa, age at first birth, educational attainment, insomnia, and neuroticism the correlation patterns that emerged from genetic correlation analysis of OCD, MDD, ADHD, and ASD were mirrored in the PRS associations with the respective comorbid OCD groups. Dissecting the polygenic architecture, we found both quantitative and qualitative polygenic heterogeneity across OCD comorbid subgroups.
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Affiliation(s)
- Nora I. Strom
- Department of Psychology, Humboldt Universität zu Berlin, Berlin, Germany
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Biomedicine and the iSEQ Center, Aarhus University, Aarhus, Denmark
- Institute of Psychiatric Phenomics and Genomics (IPPG), University Hospital, LMU Munich, Munich, Germany
| | - Jakob Grove
- Department of Biomedicine and the iSEQ Center, Aarhus University, Aarhus, Denmark
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark
- Center for Genomics and Personalized Medicine, Aarhus, Denmark
| | - Sandra M. Meier
- Department of Psychiatry, Dalhousie University, Halifax, NS, Canada
| | - Marie Bækvad-Hansen
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark
- Center for Neonatal Screening, Department for Congenital Disorders, Statens Serum Institut, Copenhagen, Denmark
| | - Judith Becker Nissen
- Center for Child and Adolescent Psychiatry, Aarhus University Hospital Risskov, Risskov, Denmark
| | - Thomas Damm Als
- Department of Biomedicine and the iSEQ Center, Aarhus University, Aarhus, Denmark
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark
- Center for Genomics and Personalized Medicine, Aarhus, Denmark
| | - Matthew Halvorsen
- Department of Genetics, University of North Carolina, Chapel Hill, NC, United States
| | - Merete Nordentoft
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Copenhagen Research Centre for Mental Health (CORE), Mental Health Centre Copenhagen, Copenhagen University Hospital, Copenhagen, Denmark
| | - Preben B. Mortensen
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark
- Center for Genomics and Personalized Medicine, Aarhus, Denmark
- National Centre for Register-Based Research, Aarhus University, Aarhus, Denmark
- Centre for Integrated Register-based Research, Aarhus University, Aarhus, Denmark
| | - David M. Hougaard
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark
- Center for Neonatal Screening, Department for Congenital Disorders, Statens Serum Institut, Copenhagen, Denmark
| | - Thomas Werge
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Institute of Biological Psychiatry, Mental Health Services, Copenhagen University Hospital, Copenhagen, Denmark
- Lundbeck Foundation Center for GeoGenetics, GLOBE Institute, University of Copenhagen, Copenhagen, Denmark
| | - Ole Mors
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark
- Psychosis Research Unit, Aarhus University Hospital, Aarhus, Denmark
| | - Anders D. Børglum
- Department of Biomedicine and the iSEQ Center, Aarhus University, Aarhus, Denmark
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark
- Center for Genomics and Personalized Medicine, Aarhus, Denmark
| | - James J. Crowley
- Department of Genetics, University of North Carolina, Chapel Hill, NC, United States
| | - Jonas Bybjerg-Grauholm
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Copenhagen, Denmark
- Center for Neonatal Screening, Department for Congenital Disorders, Statens Serum Institut, Copenhagen, Denmark
| | - Manuel Mattheisen
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Biomedicine and the iSEQ Center, Aarhus University, Aarhus, Denmark
- Department of Psychiatry, Dalhousie University, Halifax, NS, Canada
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Strom NI, Soda T, Mathews CA, Davis LK. A dimensional perspective on the genetics of obsessive-compulsive disorder. Transl Psychiatry 2021; 11:401. [PMID: 34290223 PMCID: PMC8295308 DOI: 10.1038/s41398-021-01519-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 06/04/2021] [Accepted: 06/16/2021] [Indexed: 12/21/2022] Open
Abstract
This review covers recent findings in the genomics of obsessive-compulsive disorder (OCD), obsessive-compulsive symptoms, and related traits from a dimensional perspective. We focus on discoveries stemming from technical and methodological advances of the past five years and present a synthesis of human genomics research on OCD. On balance, reviewed studies demonstrate that OCD is a dimensional trait with a highly polygenic architecture and genetic correlations to multiple, often comorbid psychiatric phenotypes. We discuss the phenotypic and genetic findings of these studies in the context of the dimensional framework, relying on a continuous phenotype definition, and contrast these observations with discoveries based on a categorical diagnostic framework, relying on a dichotomous case/control definition. Finally, we highlight gaps in knowledge and new directions for OCD genetics research.
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Affiliation(s)
- Nora I Strom
- Institute of Psychiatric Phenomics and Genomics (IPPG), University Hospital, LMU Munich, Munich, Germany
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Department of Psychology, Humboldt Universität zu Berlin, Berlin, Germany
| | - Takahiro Soda
- Department of Psychiatry, Duke University, Durham, NC, USA
| | - Carol A Mathews
- Department of Psychiatry, University of Florida, Gainesville, FL, USA
| | - Lea K Davis
- Division of Genetic Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.
- Department of Psychiatry and Behavioral Sciences, Vanderbilt University Medical Center, Nashville, TN, USA.
- Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, TN, USA.
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Grassi G, Cecchelli C, Mazzocato G, Vignozzi L. Early onset obsessive-compulsive disorder: the biological and clinical phenotype. CNS Spectr 2021:1-7. [PMID: 33517936 DOI: 10.1017/s1092852921000122] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Moving from a behavioral-based to a biological-based classification of mental disorders is a crucial step toward a precision-medicine approach in psychiatry. In the last decade, a big effort has been made in order to stratify genetic, immunological, neurobiological, cognitive, and clinical profiles of patients. Making the case of obsessive-compulsive disorder (OCD), a lot have been made in this direction. Indeed, while the Diagnostic and Statistical Manual of Mental Disorders (DSM) diagnosis of OCD aimed to delineate a homogeneous group of patients, it is now clear that OCD is instead an heterogeneous disorders both in terms of neural networks, immunological, genetic, and clinical profiles. In this view, a convergent amount of literature, in the last years, indicated that OCD patients with an early age at onset seem to have a specific clinical and biological profile, suggesting it as a neurodevelopmental disorder. Also, these patients tend to have a worse outcome respect to adult-onset patients and there is growing evidence that early-interventions could potentially improve their prognosis. Therefore, the aim of the present paper is to review the current available genetic, immunological, neurobiological, cognitive, and clinical data in favor of a more biologically precise subtype of OCD: the early-onset subtype. We also briefly resume current available recommendations for the clinical management of this specific population.
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Farrell LJ, Lavell C, Baras E, Zimmer-Gembeck MJ, Waters AM. Clinical expression and treatment response among children with comorbid obsessive compulsive disorder and attention-deficit/hyperactivity disorder. J Affect Disord 2020; 266:585-594. [PMID: 32056931 DOI: 10.1016/j.jad.2020.01.144] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 12/10/2019] [Accepted: 01/25/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND Paediatric obsessive-compulsive disorder (OCD) is highly comorbid with other psychological disorders, including attention deficit/hyperactivity disorder (ADHD). Preliminary evidence suggests that youth with comorbid OCD and ADHD may experience greater impairments than children with other comorbidities; however, there is limited research examining the clinical expression and treatment response of these youth. METHODS Youth (7 to 17 years) with a primary diagnosis of OCD and comorbid ADHD (n = 40) were compared a sample of age and gender matched youth with OCD and other comorbidity (without ADHD, n = 40). The study investigated symptoms, severity, functioning, comorbidity, family accommodation, in addition to parental psychopathology and rearing styles. Treatment response was investigated at post-treatment and six-month follow-up. RESULTS Youth with comorbid OCD and ADHD had fewer sexual obsessions, higher rates of comorbidity, poorer executive functioning and higher family impairment. Families of comorbid youth engaged in significantly more accommodation and reported more negative rearing. Finally, comorbid youth were significantly less likely to be responders or remitters at post-treatment. LIMITATIONS AND CONCLUSIONS Limitations include the cross-sectional design, relatively small clinical sample, and lack of an experimental control group of youth with ADHD without OCD. Current approaches to treatment may be improved for youth with comorbid OCD and ADHD by addressing cooccurring anxiety, behavioural difficulties, and maladaptive family accommodation and rearing. Moreover, given pronounced deficits in executive function, these youth may require a stronger initial dose of CBT to achieve an adequate response.
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Affiliation(s)
- Lara J Farrell
- School of Applied Psychology, Griffith University, Gold Coast Campus, Southport, Qld, Australia, 4222.
| | - Cassie Lavell
- School of Applied Psychology, Griffith University, Gold Coast Campus, Southport, Qld, Australia, 4222
| | - Eden Baras
- School of Applied Psychology, Griffith University, Gold Coast Campus, Southport, Qld, Australia, 4222
| | - Melanie J Zimmer-Gembeck
- School of Applied Psychology, Griffith University, Gold Coast Campus, Southport, Qld, Australia, 4222
| | - Allison M Waters
- School of Applied Psychology, Griffith University, Gold Coast Campus, Southport, Qld, Australia, 4222
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Soffer-Dudek N. Dissociative absorption, mind-wandering, and attention-deficit symptoms: Associations with obsessive-compulsive symptoms. BRITISH JOURNAL OF CLINICAL PSYCHOLOGY 2018; 58:51-69. [DOI: 10.1111/bjc.12186] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Indexed: 11/26/2022]
Affiliation(s)
- Nirit Soffer-Dudek
- Consciousness and Psychopathology Laboratory; Department of Psychology; Ben-Gurion University of the Negev; Beer-Sheva Israel
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Abstract
OBJECTIVE Obsessive-compulsive disorder (OCD) is a moderately prevalent neurodevelopmental disorder, and many children suffer from subclinical obsessive-compulsive (OC) symptoms. The disorder is heterogeneous and has high comorbidity rates. In early disease stages of psychiatric disorders, symptoms are typically hard to attribute exclusively to specific disorders. The authors investigated whether profiles of neuropsychiatric symptoms can be distinguished within a large population-based study of school-aged children (7-10 years) scoring high on OC symptoms. METHODS OC symptoms and comorbid symptoms common in pediatric OCD were assessed: symptoms of attention-deficit hyperactivity disorder, oppositional defiant disorder, autism, and anxiety. Latent profile analysis was performed on the subgroup of children scoring high on OC symptoms (high-OC sample, n = 209, i.e., 4.5% of total sample, n = 4632) using the z scores of the measures of comorbid symptoms as indicators. RESULTS Three distinguishable profiles were found within the high-OC sample. The first subgroup ("OC-specific"; 81.3%, 3.7% of total sample) had only OC-specific problems, the second subgroup ("Comorbid OC"; 11.0%, 0.5% of total sample) had high scores on all measures of comorbid symptomology, and the third subgroup ("Autistic OC"; 7.7%, 0.3%, of total sample) scored especially high on autism. CONCLUSION The findings show that profiles based on neuropsychiatric symptoms can be distinguished within a population-based sample of school-aged children scoring high on obsessive-compulsive symptoms. These profiles may be useful in establishing patterns of symptom course during development. Longitudinal follow-up is necessary to ascertain whether at a later age these subgroups still differ in their symptom profile and neuropsychiatric trajectory.
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Summer Camp Program for Children With Obsessive–Compulsive Disorder: Description and Preliminary Observations. COGNITIVE AND BEHAVIORAL PRACTICE 2017. [DOI: 10.1016/j.cbpra.2016.03.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Guler AS, Yazgan Y, Pelin AU. Autistic Traits and Factors Related to a Clinical Decision to Use Risperidone in Children with Attention Deficit Hyperactivity Disorder. ACTA ACUST UNITED AC 2016. [DOI: 10.5455/bcp.20140616123454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Treatment Efficacy of Combined Sertraline and Guanfacine in Comorbid Obsessive-Compulsive Disorder and Attention Deficit/Hyperactivity Disorder: Two Case Studies. J Dev Behav Pediatr 2016; 37:491-5. [PMID: 27011005 PMCID: PMC4930387 DOI: 10.1097/dbp.0000000000000290] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Treatment of obsessive-compulsive disorder (OCD) is complicated by comorbid psychiatric disorders. Successful treatment of 2 pediatric patients with severe OCD and comorbid attention deficit/hyperactivity disorder (ADHD) is described. METHOD A report on 2 pediatric clinical cases (Ages 9 and 10) with comorbid OCD and ADHD was used to describe response to medication management through the serotonin transporter inhibitor, sertraline, and the noradrenergic α2A receptor agonist, guanfacine, along with cognitive behavioral therapy. RESULTS Cognitive behavioral therapy combined with titrated doses of the serotonin transporter inhibitor, sertraline, and the noradrenergic α2A receptor agonist, guanfacine resolved OCD symptoms and the underlying ADHD. CONCLUSION The novel observations support a focused psychological and pharmacological approach to successful treatment of complex symptoms in patients with comorbid OCD and ADHD. Limitations to generalizability are discussed.
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Comorbidity Between Attention Deficit/Hyperactivity Disorder and Obsessive-Compulsive Disorder Across the Lifespan: A Systematic and Critical Review. Harv Rev Psychiatry 2015; 23:245-62. [PMID: 26052877 PMCID: PMC4495876 DOI: 10.1097/hrp.0000000000000050] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The concept of comorbidity between attention deficit/hyperactivity disorder (ADHD) and obsessive-compulsive disorder (OCD) has been discussed for two decades. No review, however, has examined this question in light of the stark contrast in disorder-specific phenomenology and neurobiology. We review reported prevalence rates and the methodological, phenomenological, and theoretical issues concerning concomitant ADHD-OCD. Reported co-occurrence rates are highly inconsistent in the literature. Studies aimed at examining the potential for comorbidity have suffered from various methodological problems, including the existence of very few community samples, highly variable exclusionary criteria, and possible clinical misinterpretation of symptoms. Despite numerous studies suggesting an ADHD-OCD comorbidity, thus far etiological (i.e., genetic) backing has been provided only for a pediatric comorbidity. Additionally, inflated rates of ADHD-OCD co-occurrence may be mediated by the presence of tic disorders, and evidence of impaired neuronal maturational processes in pediatric OCD may lead to possibly transient phenotypical expressions that resemble ADHD symptomatology. Thus, clinicians are encouraged to consider the possibility that ADHD-like symptoms resulting from OCD-specific symptomatology may be misdiagnosed as ADHD. This suggestion may account for the lower co-occurrence rates reported in adolescents and adults and for the lack of a theoretical account for comorbidity in these age groups. Existing literature is summarized and critically reviewed, and recommendations are made for future research.
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Brown FC, Katz LJ, Roth RM, Beers SR. The relationship of self-reported subclinical obsessive-compulsive symptoms and impulsivity among adults with AD/HD. Psychiatry Res 2014; 216:131-6. [PMID: 24556290 DOI: 10.1016/j.psychres.2014.01.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 01/20/2014] [Accepted: 01/22/2014] [Indexed: 10/25/2022]
Abstract
This study examined the degree to which subclinical obsessive-compulsive symptoms (SOCS) among individuals with Attention Deficit/Hyperactivity Disorder (AD/HD) were associated with response inhibition difficulties on a performance-based test. Participants consisted of 64 adults with AD/HD who completed the Conner׳s Continuous Performance Test, Second Edition (CPT-II), Symptom Checklist-90-Revised (SCL-90-R), and the Brown Attention Deficit Disorder Scale (ADD Scale). Individuals with higher scores on the Obsessive-Compulsive Scale from the SCL-90-R made significantly more commission errors on the CPT-II; whereas other SCL-90-R scores did not demonstrate such a relationship. We did not find that SOCS were related to severity of AD/HD. These results supported the hypothesis that individuals with AD/HD with response inhibition difficulties tend to report more subclinical obsessive symptoms.
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Affiliation(s)
- Franklin C Brown
- Department of Neurology, Yale University, New Haven, CT 06510, USA.
| | | | - Robert M Roth
- Department of Psychiatry, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756, USA
| | - Sue R Beers
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
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Roessner V, Buse J, Schultze F, Rothenberger A, Becker A. The Role of Obsessive-Compulsive Symptoms. ZEITSCHRIFT FUR KINDER-UND JUGENDPSYCHIATRIE UND PSYCHOTHERAPIE 2013; 41:163-9; quiz 170-1. [DOI: 10.1024/1422-4917/a000229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Objective: The study examines the role of obsessive-compulsive symptoms (OCS) as a part of the psychopathology of children with chronic tic disorders (CTD) and/or attention-deficit hyperactivity disorder (ADHD). Method: We assessed the psychopathology of four large patient groups without further psychiatric disorders: CTD (n = 112), CTD + ADHD (n = 82), ADHD (n = 129), and controls (n = 144)) by implementing the Child Behavior Checklist (CBCL). We compared the main effects for CTD and ADHD with and without including OCS as covariates. Results: Including OCS led to substantially different main effects for CTD on seven out of eight CBCL subscales. Slightly different main effects for ADHD were determined with respect to ADHD, mainly on the subscale withdrawn. Conclusions: OCS are closely related to CTD-associated psychopathology and – to a lesser extent, but nevertheless of importance in daily clinical practice – on ADHD-related symptoms. This information can be helpful in implementing more precise diagnostics and treatment in daily routine care.
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Affiliation(s)
- Veit Roessner
- Department of Child and Adolescent Psychiatry, Technical University Dresden, Germany
| | - Judith Buse
- Department of Child and Adolescent Psychiatry, Technical University Dresden, Germany
| | - Finnja Schultze
- Department of Child and Adolescent Psychiatry, University of Göttingen, Germany
| | | | - Andreas Becker
- Department of Child and Adolescent Psychiatry, University of Göttingen, Germany
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Abdellaoui A, Bartels M, Hudziak JJ, Rizzu P, van Beijsterveldt TCEM, Boomsma DI. Genetic Influences on Thought Problems in 7-Year-Olds: A Twin-Study of Genetic, Environmental and Rater Effects. Twin Res Hum Genet 2012; 11:571-8. [DOI: 10.1375/twin.11.6.571] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AbstractThe Thought–Problem scale (TP) of the CBCL assesses symptoms such as hallucinations and strange thoughts/behaviors and has been associated with other behavioral disorders. This study uses parental reports to examine the etiology of variation in TP, about which relatively little is known, in 7-year-old twins. Parental ratings on TP were collected in 8,962 7-year-old twin pairs. Because the distribution of TP scores was highly skewed scores were categorized into 3 classes. The data were analyzed under a threshold liability model with genetic structural equation modeling. Ratings from both parents were simultaneously analyzed to determine the rater agreement phenotype (or common phenotype [TPc]) and the rater specific phenotype [TPs] that represents rater disagreement caused by rater bias, measurement error and/or a unique view of the parents on the child's behavior. Scores on the TP-scale varied as a function of rater (fathers rated fewer problems), sex (boys scored higher) and zygosity (DZ twins scored higher). The TPc explained 67% of the total variance in the parental ratings. Variation in TPc was influenced mainly by the children's genotype (76%). Variance in TPs also showed a contribution of genetic factors (maternal reports: 61%, paternal reports: 65%), indicating that TPs does not only represent rater bias. Shared environmental influences were only found in the TPs. No sex differences in genetic architecture were observed. These results indicate an important contribution of genetic factors to thought problems in children as young as 7 years.
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Abdellaoui A, de Moor MHM, Geels LM, van Beek JHDA, Willemsen G, Boomsma DI. Thought problems from adolescence to adulthood: measurement invariance and longitudinal heritability. Behav Genet 2012; 42:19-29. [PMID: 21688041 PMCID: PMC3253273 DOI: 10.1007/s10519-011-9478-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 06/01/2011] [Indexed: 11/05/2022]
Abstract
This study investigates the longitudinal heritability in Thought Problems (TP) as measured with ten items from the Adult Self Report (ASR). There were ~9,000 twins, ~2,000 siblings and ~3,000 additional family members who participated in the study and who are registered at the Netherlands Twin Register. First an exploratory factor analysis was conducted to examine the underlying factor structure of the TP-scale. Then the TP-scale was tested for measurement invariance (MI) across age and sex. Next, genetic and environmental influences were modeled on the longitudinal development of TP across three age groups (12-18, 19-27 and 28-59 year olds) based on the twin and sibling relationships in the data. An exploratory factor analysis yielded a one-factor solution, and MI analyses indicated that the same TP-construct is assessed across age and sex. Two additive genetic components influenced TP across age: the first influencing TP throughout all age groups, while the second arises during young adulthood and stays significant throughout adulthood. The additive genetic components explained 37% of the variation across all age groups. The remaining variance (63%) was explained by unique environmental influences. The longitudinal phenotypic correlation between these age groups was entirely explained by the additive genetic components. We conclude that the TP-scale measures a single underlying construct across sex and different ages. These symptoms are significantly influenced by additive genetic factors from adolescence to late adulthood.
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Affiliation(s)
- Abdel Abdellaoui
- VU University Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands.
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Familiality of Tourette syndrome, obsessive-compulsive disorder, and attention-deficit/hyperactivity disorder: heritability analysis in a large sib-pair sample. J Am Acad Child Adolesc Psychiatry 2011; 50:46-54. [PMID: 21156269 PMCID: PMC3035426 DOI: 10.1016/j.jaac.2010.10.004] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Revised: 10/12/2010] [Accepted: 10/18/2010] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Tourette syndrome (TS) is a neuropsychiatric disorder with a genetic component that is highly comorbid with obsessive-compulsive disorder (OCD) and attention deficit/hyperactivity disorder (ADHD). However, the genetic relations between these disorders have not been clearly elucidated. This study examined the familial relations among TS, OCD, and ADHD in a large sample of TS families. METHOD Parent-offspring concordance of TS, OCD, and ADHD was examined in 952 individuals from 222 TS-affected sib-pair families originally collected for genetic studies using logistic regression with generalized estimating equations to control for correlated data. Variance components methods were used to estimate the heritability and genetic and environmental correlations among TS, OCD, and ADHD. Bilineal families where both parents had TS or OCD were excluded. RESULTS OCD and ADHD were highly heritable in these TS families. There were significant genetic correlations between TS and OCD and between OCD and ADHD, but not between TS and ADHD. In addition, significant environmental correlations were found between TS and ADHD and between OCD and ADHD. Parental OCD + ADHD was associated with offspring OCD + ADHD. CONCLUSIONS This study provides further evidence for a genetic relation between TS and OCD and suggests that the observed relation between TS and ADHD may due in part be to a genetic association between OCD and ADHD and in part due to shared environmental factors.
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Lewin AB, Chang S, McCracken J, McQueen M, Piacentini J. Comparison of clinical features among youth with tic disorders, obsessive-compulsive disorder (OCD), and both conditions. Psychiatry Res 2010; 178:317-22. [PMID: 20488548 PMCID: PMC2902642 DOI: 10.1016/j.psychres.2009.11.013] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2008] [Revised: 08/28/2009] [Accepted: 11/10/2009] [Indexed: 11/19/2022]
Abstract
The comorbidity of tic disorders (TD) and obsessive-compulsive disorder (OCD) has long been recognized in the clinical literature and appears to be bidirectional, affecting 20-60% of individuals with each disorder. Coffey et al. (1998) found that adults with TD+OCD had a more severe comorbidity profile than adults with OCD or TD alone. This exploratory study in children attempts to evaluate whether heightened diagnostic severity, increased comorbidity load, and lower functioning is more commonplace in youth with TD+OCD in comparison to either syndrome alone. Participants were 306 children (seeking clinical evaluation) with TD, OCD, or TD+OCD. Assessment consisted of a diagnostic battery (including structured diagnostic interviews and standardized parent-report inventories) to evaluate diagnostic severity, comorbid psychopathology, behavioral and emotional correlates, and general psychosocial functioning. Data from this study sample were not supportive of the premise that youth with both a tic disorder and OCD present with elevated diagnostic severity, higher risk-for or intensity-of comorbidity, increased likelihood of externalizing/internalizing symptomatology, or lower broad-based adaptive functioning. The OCD group had elevated rates of comorbid anxiety disorders and attention-deficit hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD) were more prevalent among youth in the TD group. The three groups also differed on key demographic variables. Our findings suggest that, in contrast to adults, TD+OCD in children and adolescents does not represent a more severe condition than either disorder alone on the basis of diagnostic comorbidity, symptom severity, or functional impairment.
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Affiliation(s)
- Adam B Lewin
- University of South Florida College of Medicine, Department of Pediatrics, Rothman Center for Pediatric Neuropsychiatry, St. Petersburg, FL 33701, USA.
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Correlates of comorbid anxiety and externalizing disorders in childhood obsessive compulsive disorder. Eur Child Adolesc Psychiatry 2010; 19:637-45. [PMID: 20349255 PMCID: PMC2910305 DOI: 10.1007/s00787-010-0101-0] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2008] [Accepted: 03/03/2010] [Indexed: 10/26/2022]
Abstract
The present study examines the influence of diagnostic comorbidity on the demographic, psychiatric, and functional status of youth with a primary diagnosis of obsessive compulsive disorder (OCD). Two hundred and fifteen children (ages 5-17) referred to a university-based OCD specialty clinic were compared based on DSM-IV diagnostic profile: OCD without comorbid anxiety or externalizing disorder, OCD plus anxiety disorder, and OCD plus externalizing disorder. No age or gender differences were found across groups. Higher OCD severity was found for the OCD + ANX group, while the OCD + EXT group reported greater functional impairment than the other two groups. Lower family cohesion was reported by the OCD + EXT group compared to the OCD group and the OCD + ANX group reported higher family conflict compared to the OCD + EXT group. The OCD + ANX group had significantly lower rates of tic disorders while rates of depressive disorders did not differ among the three groups. The presence of comorbid anxiety and externalizing psychopathology are associated with greater symptom severity and functional and family impairment and underscores the importance of a better understanding of the relationship of OCD characteristics and associated disorders. Results and clinical implications are further discussed.
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Haddad ADM, Umoh G, Bhatia V, Robertson MM. Adults with Tourette's syndrome with and without attention deficit hyperactivity disorder. Acta Psychiatr Scand 2009; 120:299-307. [PMID: 19486328 DOI: 10.1111/j.1600-0447.2009.01398.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Comorbidity between Tourette's syndrome (TS) and attention deficit hyperactivity disorder (ADHD) is high. In children, those with both TS+ADHD fare less well than those with TS-only on measures of both psychopathology and behaviour. The objective of this study was to document such measures in adult patients. METHOD Eighty adults with TS-only were compared to 64 with TS+ADHD using a clinical interview and standardised measures of depression, anxiety and obsessionality. RESULTS The two groups were no different on measures of TS severity. TS+ADHD patients had significantly more depression, anxiety, obsessive-compulsive behaviour and maladaptive behaviours than patients with TS-only. There were also significant differences in the incidence of copro- and echo-phenomena and family history of ADHD. CONCLUSION The finding of increased overall behavioural difficulties and psychopathology in adult patients with TS+ADHD when compared with TS-only is in agreement with previous findings in children with TS. Appropriate treatment of ADHD in TS patients during childhood may prevent many behavioural problems in adulthood.
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Affiliation(s)
- A D M Haddad
- Department of Experimental Psychology, University of Oxford, Oxford, UK
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Mayes SD, Calhoun SL, Chase GA, Mink DM, Stagg RE. ADHD subtypes and co-occurring anxiety, depression, and oppositional-defiant disorder: differences in Gordon diagnostic system and Wechsler working memory and processing speed index scores. J Atten Disord 2009; 12:540-50. [PMID: 18664713 DOI: 10.1177/1087054708320402] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Wechsler Intelligence Scale for Children Freedom-from-Distractibility/Working Memory Index (FDI/WMI), Processing Speed Index (PSI), and Gordon Diagnostic System (GDS) scores in ADHD children were examined as a function of subtype and coexisting anxiety, depression, and oppositional-defiant disorder. METHOD Participants were 587 children with ADHD combined type (alone, with oppositional-defiant disorder, and with anxiety or depression) and ADHD inattentive type (alone and with anxiety or depression). RESULTS Attention scores (FDI/WMI and GDS Vigilance and Distractibility) were similar and low for all groups. ADHD combined groups had greater impulsivity (GDS Delay) than ADHD inattentive groups, and ADHD inattentive groups had slower processing speed (PSI) than ADHD combined groups. Comorbidity did not affect test performance. Scores differentiated ADHD subtypes with 72% accuracy. CONCLUSION Findings support the validity of DSM-IV ADHD combined and inattentive subtypes and the validity of the GDS, FDI/WMI, and PSI in assessing attention, impulsivity, and processing speed in children with ADHD.
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Affiliation(s)
- Susan Dickerson Mayes
- Penn State College of Medicine, Milton S. Hershey Medical Center, Department of Psychiatry, Hershey, PA 17033, USA.
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Steinhausen HC, Peloso M, Metzke CW. Performance of the adolescent obsessive-compulsive scale in a community survey. J Anxiety Disord 2009; 23:218-22. [PMID: 18723315 DOI: 10.1016/j.janxdis.2008.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2008] [Revised: 07/10/2008] [Accepted: 07/11/2008] [Indexed: 10/21/2022]
Abstract
Obsessive-compulsive behavior was studied in a cohort of N=570 subjects who had been assessed at three times between adolescence and young adulthood. Based on the Youth Self-Report (YSR) and the Young Adult Self-Report (YASR), the adolescent obsessive-compulsive scale (AOCS) was defined. At each of the three assessments, subjects scoring above the cut-off score of the 90th percentile of the AOCS were identified and compared to the rest of the sample serving as control group. The risk group was clearly more abnormal in both domains of internalizing and externalizing across time. Various psychiatric disorders in young adulthood were predicted by the AOCS. However, concomitant general psychopathology also contributed strongly to the prediction. Parent and youth agreement on group membership was rather low. Stability of group assignment across time was significantly increased. The AOCS is a promising instrument both for epidemiological and clinical studies. Its content and predictive validity deserves further studies.
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Garcia AM, Freeman JB, Himle MB, Berman NC, Ogata AK, Ng J, Choate-Summers ML, Leonard H. Phenomenology of Early Childhood Onset Obsessive Compulsive Disorder. JOURNAL OF PSYCHOPATHOLOGY AND BEHAVIORAL ASSESSMENT 2008; 31:104-111. [PMID: 20198131 DOI: 10.1007/s10862-008-9094-0] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This paper describes the phenomenological features of early childhood onset obsessive compulsive disorder (OCD; defined as children meeting DSM-IV criteria for OCD with age of onset <8 years). Fifty-eight children (ages 4-8) were included in the sample. OCD and comorbid diagnoses were determined by structured interview, and OCD severity was measured using the Children's Yale-Brown Obsessive Compulsive Scale (CY-BOCS). Mean age of OCD onset was almost five, and mean age of presentation was between 6 and 7. Mean symptom severity was in the moderately severe range. Comorbidity and family history of OCD were common. Contamination and aggressive/catastrophic obsessions and washing and checking compulsions were endorsed most frequently. Results indicate that early childhood onset OCD may have a lower boy to girl ratio and lower rates of depressive disorders, but may be similar to later childhood onset OCD in terms of OCD symptom presentation and severity.
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Affiliation(s)
- Abbe M Garcia
- Bradley/Hasbro Children's Research Center, Providence, USA
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Ivarsson T, Melin K, Wallin L. Categorical and dimensional aspects of co-morbidity in obsessive-compulsive disorder (OCD). Eur Child Adolesc Psychiatry 2008; 17:20-31. [PMID: 18004647 DOI: 10.1007/s00787-007-0626-z] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/16/2007] [Indexed: 02/07/2023]
Abstract
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.
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Affiliation(s)
- Tord Ivarsson
- Centre for Child and Adolescent Mental Health, Eastern and Southern Norway Gullhaug Torg 4B, R-BUP, Postboks 4623 Nydalen, Oslo 0405, Norway.
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Jans T, Wewetzer C, Klampfl K, Schulz E, Herpertz-Dahlmann B, Remschmidt H, Warnke A. Phänomenologie und Komorbidität der Zwangsstörung bei Kindern und Jugendlichen. ZEITSCHRIFT FUR KINDER-UND JUGENDPSYCHIATRIE UND PSYCHOTHERAPIE 2007; 35:41-50. [PMID: 17230428 DOI: 10.1024/1422-4917.35.1.41] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Zusammenfassung: Fragestellung: Gegenstand der Studie waren die Symptomatologie und die Komorbidität der Zwangsstörung mit Beginn im Kindes- und Jugendalter. Methodik: Untersucht wurde eine Inanspruchnahmestichprobe von 55 kinder- und jugendpsychiatrischen Patienten (29 männlich, 26 weiblich), die überwiegend stationär behandelt wurden (95%). Strukturierte diagnostische Interviews zur Erfassung von Zwangsstörung und weiteren psychischen Störungen wurden zu Befragungen von Eltern und Kind eingesetzt. Ergebnis: Das mittlere Alter bei Beginn der Zwangsstörung betrug 11,3 Jahre. Jungen waren bei Störungsbeginn etwas, aber nicht statistisch signifikant jünger als Mädchen. Zwangshandlungen bezogen sich vorwiegend auf Waschen und Sauberkeit, Kontrollieren sowie Wiederholungen, Ordnen und Zählen. Zwangsgedanken beinhalteten vor allem Verunreinigung, die Erwartung schlimmer Ereignisse, Sexualität oder Aggression. In der klinischen Behandlungsroutine wurden seltener eine gemischte Zwangsstörung mit Gedanken und Handlungen diagnostiziert als bei Anwendung strukturierter Interviews. Die Komorbiditätsrate war Elternangaben zufolge hoch (Lebenszeit-Diagnosen: 69%; aktuelle Diagnosen: 53%). Angststörungen, affektive Störungen, hyperkinetische Störungen, Störungen des Sozialverhaltens und Ess-Störungen standen im Vordergrund. Die Zwangssymptomatik war bei Patienten mit einer höheren Anzahl an komorbiden Lebenszeitdiagnosen signifikant stärker ausgeprägt. Schlussfolgerungen: Die Studienergebnisse stehen in Einklang mit denjenigen internationaler Studien. Deutlich wurde eine Methodenabhängigkeit gestellter Diagnosen. In der Subtypisierung von Patientengruppen durch Symptomdimensionen wird ein fruchtbarer Ansatz für weitere Studien gesehen.
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Affiliation(s)
- Thomas Jans
- Klinik und Poliklinik für Kinder- und Jugendpsychiatrie und Psychotherapie der Julius-Maximilians-Universität Würzburg, Germany
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Masi G, Millepiedi S, Mucci M, Bertini N, Pfanner C, Arcangeli F. Comorbidity of obsessive-compulsive disorder and attention-deficit/hyperactivity disorder in referred children and adolescents. Compr Psychiatry 2006; 47:42-7. [PMID: 16324901 DOI: 10.1016/j.comppsych.2005.04.008] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2004] [Accepted: 04/21/2005] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE The aim of this study was to explore whether comorbid attention-deficit/hyperactivity disorder (ADHD) affects the clinical expression and outcome of obsessive-compulsive disorder (OCD) in a clinical sample. METHOD A consecutive series of 94 children and adolescents (mean age, 13.6 +/- 2.8 years) with current diagnosis of OCD were included in the study. Twenty-four (25.5%) patients were diagnosed as having a comorbid ADHD. Subjects with OCD plus ADHD were compared with subjects with OCD but without ADHD. RESULTS Comorbid ADHD with OCD was significantly associated with a higher rate of males, an earlier onset of OCD, a greater psychosocial impairment, and a heavier comorbidity, namely, with bipolar disorder, tic disorder, and oppositional defiant disorder/conduct disorder. Phenomenology of obsessions and compulsions and outcome were not affected by ADHD comorbidity. CONCLUSIONS A screening for ADHD should be performed in patients with OCD, as these patients and their parents are frequently not aware that the impairment may be partly due to a comorbid ADHD.
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Affiliation(s)
- Gabriele Masi
- IRCCS Stella Maris, Scientific Institute of Child Neurology and Psychiatry, Calambrone, 56018 Calambrone Pisa, Italy.
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