Understanding and Treating Obsessive-compulsive Disorder: The Interplay of Genetic, Environmental, and Therapeutic Factors

Research Article
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Understanding and Treating Obsessive-compulsive Disorder: The Interplay of Genetic, Environmental, and Therapeutic Factors

Xiaorui Ma 1*
  • 1 Northeastern University    
  • *corresponding author Ma.xiaorui1@northeastern.edu
Published on 8 February 2025 | https://doi.org/10.54254/2753-7048/2025.20789
LNEP Vol.84
ISSN (Print): 2753-7056
ISSN (Online): 2753-7048
ISBN (Print): 978-1-83558-937-3
ISBN (Online): 978-1-83558-938-0

Abstract

Millions worldwide suffer from OCD, which begins in adolescence and impairs daily life. Many genetic and environmental variables induce OCD. It examines heredity and environment as OCD causes. OCD is connected to serotonin and dopamine gene polymorphisms. Serotonin and glutamate transporter gene polymorphisms increase OCD risk. OCD is caused by a neurochemical imbalance that affects emotional control and behavior, according to these genetics. Childhood trauma, stress, poor life experiences, and genetics promote OCD symptoms. Neurodevelopment and the stress response system are affected by emotional, physical, or sexual abuse, rendering youngsters more prone to OCD. Early unpleasant experiences can dysregulate the stress-regulating hypothalamic-pituitary-adrenal (HPA) axis, generating anxiety and compulsivity. Life experiences and biological stresses may induce OCD, including prenatal effects, maternal stress, and infections. Genetics and environment complicate OCD's biochemical and experiential factors. This knowledge is essential for OCD therapy and prevention. Early detection of at-risk individuals, especially those with a genetic predisposition to OCD or trauma, permits concentrated therapy. CBT, especially exposure and response prevention, can cure OCD by changing maladaptive cognitive processes and behaviors. Some people's OCD symptoms improve with SSRIs' neurochemical balance. OCD treatment should incorporate genetic and environmental factors, according to this paper. Researchers and doctors can improve patient-specific treatment strategies by analyzing these complex relationships. Genetic testing, environmental assessments, and therapy tactics affect OCD treatment outcomes and quality of life. Genetic and environmental research is needed to understand OCD and develop new treatments and preventative methods.

Keywords:

Obsessive-compulsive disorder, nature, nurture, stress-regulating hypothalamic-pituitary-adrenal, treatment

Ma,X. (2025). Understanding and Treating Obsessive-compulsive Disorder: The Interplay of Genetic, Environmental, and Therapeutic Factors. Lecture Notes in Education Psychology and Public Media,84,90-96.
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1. Introduction

Obsessive-compulsive disorder (OCD) is a mental health illness defined by unwanted, intrusive thoughts (obsessions) and repetitive activities (compulsions) executed to mitigate emotional distress. Obsessive-Compulsive Disorder (OCD) impacts millions globally, frequently commencing in adolescence and resulting in significant repercussions for several children. A recent study reveals that between 1% to 2% of adolescents are diagnosed with OCD, underscoring the significant frequency of this disorder during teenage growth [1].

OCD is fundamentally shaped by a complex interplay of genetic and environmental factors, illustrating its multiple etiology. Research findings indicate that hereditary predisposition predominantly influences the condition, encompassing several identified gene variants. Particular polymorphisms associated with serotonin modulation have been correlated with a heightened chance of developing OCD [2]. Various environmental factors, including traumatic events and childhood stress, considerably influence the emergence of the condition in genetically predisposed individuals. Comprehending the emergence and development of OCD necessitates an analysis of the interplay between hereditary and environmental influences.

Obsessive-Compulsive Disorder (OCD) cannot be ascribed to a singular cause; studies indicate that both genetic and environmental variables play a role in its onset. Obsessive-Compulsive Disorder (OCD) arises from a multifaceted interplay of biological elements and life experiences, both of which affect the expression and intensity of symptoms.

2. Nature: Obsessive-Compulsive Disorder and Genetic Influences

Obsessive-compulsive disorder (OCD) is a complex mental health illness frequently ascribed to the interplay of genetics. Recent studies have underscored the substantial correlation between obsessive-compulsive disorder and hereditary factors. Research indicates that those with a familial predisposition to the condition exhibit a heightened likelihood of developing OCD, implying a significant genetic component. Mattheisen et al. investigated the possible correlation between specific genes and the onset of OCD, indicating that several genetic variants may play a role in the disorder's emergence [2]. The research highlighted the significant heritability of OCD, involving the intricate interaction of several genes that may predispose individuals to the disorder. Furthermore, Stewart and Pauls detailed the role of particular genes in the serotonin pathway, which is essential for regulating mood and behavior [3].

The research conducted by Mattheisen et al. demonstrated that obsessive-compulsive disorder (OCD) is affected by multiple genetic factors [2]. Specifically, it performed an extensive genome-wide association study (GWAS) to investigate the genetic foundations of obsessive-compulsive disorder (OCD). Their findings presented substantial evidence that OCD is affected by various genetic factors, explicitly emphasizing the significance of gene variants associated with neurotransmitter pathways. This encompasses genes related to the serotonergic and dopaminergic systems, essential for mood control and reward processing. The study found distinct risk loci linked to aberrant serotonin signaling, validating the concept that serotonin dysregulation is central to the pathogenesis of OCD. Moreover, polymorphisms influencing dopamine transmission were identified, reinforcing the role of dopaminergic circuits in compulsive behavior and decision-making processes. The serotonin transporter gene (SLC6A4) has been thoroughly investigated concerning OCD, with data indicating that polymorphisms in this gene may result in modified serotonin reuptake, thereby leading to obsessive and compulsive behaviors. Furthermore, polymorphisms in the glutamate transporter gene (SLC1A1) have been associated with OCD, suggesting that alterations in glutamatergic transmission may contribute to the disorder's development. Glutamate is an excitatory neurotransmitter essential for cerebral communication, and anomalies in glutamate concentrations have been linked to the repeated thoughts and actions characteristic of OCD.

Stewart and Pauls emphasized the significance of investigating the genetic correlation between OCD and other illnesses, such as anxiety disorders, Tourette syndrome, and major depressive disorder [3]. Familial and twin studies indicate that genetic predisposition to OCD frequently coincides with these diseases, implying common genetic risk factors. The polymorphism of the DRD4 gene, associated with dopamine modulation, has been correlated with both OCD and Tourette syndrome, suggesting the same neuronal route. The genetic overlap may elucidate the significant incidence of comorbidities in patients with OCD, underscoring the necessity for a holistic approach to comprehending the genetic foundation of OCD and its associated illnesses. By identifying prevalent genetic risk factors, researchers can formulate more efficacious treatment strategies that encompass all the symptoms experienced by patients with OCD. The genetic discoveries indicate that OCD is not merely a result of personal experiences but is profoundly embedded in the biological constitution of affected individuals. At the same time, the hereditary factors underscore the intricate biochemical pathways associated with OCD and indicate possible targets for pharmaceutical interventions designed to rectify these imbalances.

3. Nurture: Environmental Influences on Obsessive-Compulsive Disorder

Moreover, environmental variables, especially early trauma, are substantial contributors to OCD. Childhood trauma, encompassing emotional, physical, or sexual abuse, may substantially influence the emergence of OCD symptoms. Nechmad et al. investigated the correlation between childhood trauma and the emergence of OCD in different genders and ages from 12 to 18 with schizophrenia, emphasizing that early adverse experiences may heighten the vulnerability to OCD [4]. This relationship implies that early-life environmental stressors may trigger the illness. Childhood trauma is thought to modify the hypothalamic-pituitary-adrenal (HPA) axis, which governs the body's stress response, infected by genetic factors. Dysregulation of the HPA axis may result in increased cortisol levels, thereby precipitating anxiety and OCD symptoms. The interplay between genetic predisposition and environmental stress highlights the intricate and multifaceted characteristics of OCD.

Koorenhof and Dommett discovered that early trauma may hinder multiple cognitive functions, including reaction inhibition, which is frequently compromised in individuals with OCD [4]. Response inhibition denotes the capacity to suppress improper or unwanted behaviors, a function often deficient in individuals with OCD. Trauma during pivotal phases of brain development may result in modifications to the neural networks governing response inhibition, especially within the prefrontal cortex and basal ganglia, which are linked to OCD. These alterations may heighten individuals' sensitivity to stress and intrusive thoughts, hence elevating the chance of OCD symptoms. The prefrontal cortex participates in executive tasks, whereas the basal ganglia are implicated in habit formation, indicating that traumatic experiences may induce enduring alterations in the brain, rendering individuals more susceptible to the repetitive thoughts and behaviors typical of OCD.

In addition to childhood trauma, other environmental factors, including prenatal effects and infections, have been associated with a heightened risk of OCD. Maternal stress, diseases, and delivery problems during gestation are correlated with a heightened incidence of obsessive-compulsive disorder in offspring. These conditions may impede typical brain development, leading to anomalies in neural networks responsible for emotion regulation and cognitive control. The immune response to the infection may induce inflammation in brain regions linked to OCD, especially the basal ganglia, potentially resulting in the abrupt emergence of OCD symptoms. These findings underscore the necessity of accounting for many environmental influences, specifically in the fertile period, when examining the etiology of OCD.

Genetic and environmental factors collectively augment scientists' comprehension of OCD development, illustrating the intricate interplay between genetic predispositions and life experiences in influencing mental health outcomes. The interplay between genetic predisposition and environmental circumstances indicates that OCD is not attributable to a singular cause but instead to a multifaceted interaction of diverse effects. This comprehension bears considerable ramifications for the management and prevention of OCD. Individuals with significant genetic predisposition may significantly benefit from early intervention and targeted treatment designed to mitigate the effects of environmental stressors. Cognitive-behavioral therapy (CBT), designed to modify maladaptive cognitive processes and behaviors, has demonstrated efficacy in treating obsessive-compulsive disorder (OCD). Moreover, comprehending the genetic and environmental factors of OCD can facilitate the identification of at-risk individuals and enhance individualized treatment approaches. Genetic testing may ultimately discern those at elevated risk for OCD, promoting early intervention and preventive strategies before symptom onset. Furthermore, mitigating environmental risk factors, such as offering assistance to children who have undergone trauma, may diminish the probability of having OCD in later life. Mental health practitioners can enhance treatment and prevention measures for persons with OCD by employing a comprehensive approach that encompasses hereditary and environmental components.

In summary, OCD is a multifaceted disorder resulting from the interplay of hereditary and environmental influences. Studies indicate that genetic variables, particularly gene polymorphisms associated with neurotransmitter systems, play a significant role in the etiology of OCD.

Simultaneously, environmental factors, such as childhood trauma, may serve as catalysts or intensify the illness in genetically predisposed individuals. By comprehending the intricate interplay between natural and ecological variables in the etiology of OCD, researchers and therapists can develop more effective interventions that address both the biological and environmental components of the disorder. This comprehensive approach may enhance results for OCD patients and finally alleviate the burden of this incapacitating condition.

4. Treatment

Adolescents with OCD have distinct obstacles that impede diagnosis and treatment, necessitating a focus on therapy appropriate for their developmental phase. Researchers have examined diverse treatment modalities to assess their efficacy in addressing OCD, particularly in adolescents, with some prioritizing psychotherapy, others concentrating on pharmacological approaches, and a few exploring novel interventions like Deep Brain Stimulation (DBS). Recent research elucidates the development of treatment strategies, the particular requirements of adolescents, and the enigmatic aspects of comprehending OCD.

Cognitive Behavioral Therapy (CBT), particularly the Exposure and Response Prevention (ERP) technique, is among the most efficacious interventions for adolescents with Obsessive-Compulsive Disorder (OCD). CBT assists individuals in addressing their obsessions while inhibiting their customary obsessive reactions. Van Noppen et al. highlighted the effectiveness of Cognitive Behavioral Therapy (CBT), claiming it is the benchmark for treating Obsessive-Compulsive Disorder (OCD) as it directly targets maladaptive beliefs and behaviors [5]. This conclusion is based on empirical research involving a substantial sample size, employing a randomized controlled trial (RCT) design to ensure the validity and reliability of the findings. CBT is essential for teenagers since it offers a systematic method for managing their symptoms during a pivotal phase of emotional and social development. Treatment adherence can be difficult for adolescents, and incorporating family members is frequently advised to establish a supportive atmosphere that promotes therapeutic skills.

The incorporation of technology into OCD treatment has emerged as a significant priority. Lovell et al. examined the efficacy of telephone cognitive behavioral therapy, demonstrating that remote interventions can match the effectiveness of in-person therapy, thus offering a more accessible treatment alternative for individuals unable to obtain specialized care [6]. Their study involved a diverse sample, with researchers both conducting the telephone CBT sessions and measuring outcomes for the individuals participating in the program, which helped ensure a comprehensive assessment of its effectiveness. Kayser et al. elucidated this notion by investigating the utilization of videoconferencing in treating OCD, emphasizing its pragmatic advantages in scenarios where in-person therapy is unfeasible, such as during the COVID-19 pandemic [7]. Videoconferencing facilitates the maintenance of therapeutic connections and upholds the framework of Cognitive Behavioral Therapy, which is beneficial for teenagers experiencing disturbances in their daily routines. Remote treatments might mitigate obstacles such as stigma, transportation challenges, and geographical constraints, hence enhancing treatment accessibility for adolescents in need.

Obsessive-Compulsive Personality Disorder (OCPD), which exhibits some overlapping characteristics with OCD, can complicate the treatment prognosis. Pinto et al. examined the symptomatology and functional implications of OCPD, observing that it may worsen OCD symptoms or hinder treatment efficacy [8]. Adolescents exhibiting both OCD and perfectionistic characteristics of OCPD may encounter heightened challenges due to the inflexibility and perfectionism intrinsic to OCPD, which can impair their capacity to participate in ERP and accept the uncertainty essential for overcoming obsessions. For this subgroup, it is crucial to adjust treatment strategies to address these co-occurring characteristics, maybe integrating additional interventions to mitigate perfectionistic inclinations and improve cognitive flexibility.

Pharmacotherapy is frequently employed to address OCD, particularly when cognitive-behavioral therapy alone fails to yield adequate improvement. Selective serotonin reuptake inhibitors (SSRIs) are commonly used to treat obsessive-compulsive disorder (OCD) and have demonstrated efficacy in alleviating the severity of OCD symptoms in numerous teens [9,10]. Nonetheless, medicine poses difficulties, especially for adolescent patients who may encounter adverse effects that affect their adherence to therapy. Combining medicine with cognitive behavioral therapy (CBT) is frequently advised, as this method effectively tackles the condition's physiological and psychological aspects. Despite the prevalent utilization of SSRIs, considerable knowledge remains to be acquired regarding the ideal dosage and duration of pharmacotherapy for teenagers, as well as the long-term impacts of these medications on the growing brain.

Deep Brain Stimulation (DBS) has arisen as a viable alternative in more severe or refractory situations. Blomstedt et al. investigated the application of DBS in obsessive-compulsive disorder patients unresponsive to conventional treatments [11]. While DBS is often seen as a last-resort treatment, it has demonstrated efficacy in alleviating symptoms in individuals with severe, chronic OCD. The application of DBS in adolescents is contentious due to the invasive characteristics of the operation and the inherent hazards of neurosurgery. The ethical concerns about DBS use in pediatric patients highlight the necessity for continued research into less intrusive yet effective alternative therapies that can offer relief for children unresponsive to CBT or medicine alone.

In the treatment of adolescent OCD, it is essential to emphasize both symptom alleviation and the enhancement of overall functioning and quality of life. Adolescents undergo a developmental phase marked by identity construction, establishing social interactions, and pursuing independence. OCD can profoundly impede developmental objectives, resulting in social isolation, academic challenges, and familial discord. Consequently, treatment should focus on assisting teenagers in reclaiming autonomy, re-engaging in age-appropriate activities, and cultivating coping skills that facilitate maturity. Family involvement is frequently a crucial element in effective therapy, as parents and siblings may substantially aid in supporting the teenager and reducing accommodating behaviors that may unintentionally worsen OCD symptoms.

Another unanswered topic is why specific individuals respond favorably to treatment while others do not. Comorbidities, alterations in brain structure or function, and individual variances in treatment adherence may affect treatment outcomes. Yet, additional study is required to elucidate these relationships and formulate better-tailored treatment approaches.

In conclusion, addressing adolescent OCD necessitates a holistic strategy that considers the distinct obstacles encountered by this demographic. CBT, especially Exposure and Response Prevention, constitutes the core of treatment, yet incorporating technology and pharmaceuticals offers additional resources for symptom management. In extreme instances, Deep Brain Stimulation may serve as a remedy, yet ethical and practical factors constrain its implementation in adolescents. Addressing comorbid illnesses like OCPD, incorporating family into therapy, and prioritizing enhanced general functioning are critical elements of effective treatment. Future investigations into the underlying causes of OCD and the determinants of treatment efficacy will be essential for strengthening therapeutic outcomes for adolescents affected by this intricate condition.

5. Conclusion

Obsessive-compulsive disorder (OCD) is a mental health condition characterized by intrusive thoughts and obsessive behaviors that significantly affect daily functioning. This article analyzes obsessive-compulsive disorder (OCD) and emphasizes its symptoms and traits. Obsessive-compulsive disorder (OCD) affects one to two percent of teenagers, representing a notable prevalence among adolescents. A multifarious interplay of environmental and genetic factors influences the complex etiology of the disease. Specific polymorphisms linked to the control of serotonin and dopamine are significant genetic variables that increase susceptibility to obsessive-compulsive disorder (OCD). Various environmental factors may influence the onset and intensity of obsessive-compulsive disorder (OCD) symptoms. These encompass childhood trauma, stress, and adverse life events. The relationship between genetic predisposition and environmental factors indicates that obsessive-compulsive disorder (OCD) arises not from a singular cause but from a complex interplay of biological and experience components.

This essay underscores the need to employ a comprehensive approach to understanding and treating obsessive-compulsive disorder (OCD). Cognitive behavioral therapy (CBT), particularly exposure and response prevention (ERP), is an effective treatment for managing symptoms of obsessive-compulsive disorder (OCD). Moreover, pharmaceutical interventions, such as selective serotonin reuptake inhibitors (SSRIs), are commonly employed to rectify the neurochemical imbalances associated with the disorder. Researchers and clinicians can develop more effective and personalized treatment programs by integrating genetic analyses, environmental evaluations, and treatments into their treatment strategies. This integrative approach aims to improve treatment outcomes for those affected by obsessive-compulsive disorder (OCD), thereby enhancing their quality of life and alleviating the disease's burden. Future research should persist in examining the genetic and environmental determinants of obsessive-compulsive disorder (OCD) to identify novel strategies for intervention and prevention.


References

[1]. Greist, J. H., & Jefferson, J. W. (2007). Obsessive-compulsive disorder. Focus, 5(3), 283–298. https://doi.org/10.1176/foc.5.3.foc283

[2]. Mattheisen, M., Pato, M. T., Pato, C. N., & Knowles, J. A. (2021). What have we learned about the genetics of obsessive-compulsive and related disorders in recent years? Focus, 19(4), 384–391. https://doi.org/10.1176/appi.focus.20210017

[3]. Stewart, S. E., & Pauls, D. L. (2010). The genetics of obsessive-compulsive disorder. Focus, 8(3), 350–360. https://doi.org/10.1176/foc.8.3.foc350

[4]. Senter, M. S., Patel, S. R., Dixon, L. B., Myers, R. W., & Simpson, H. B. (2021). Defining and addressing gaps in care for obsessive-compulsive disorder in the United States. Psychiatric Services, 72(7), 784–793. https://doi.org/10.1176/appi.ps.202000296

[5]. Van Noppen, B., Sassano-Higgins, S., Appasani, R., & Sapp, F. (2021). Cognitive-behavioral therapy for obsessive-compulsive disorder: 2021 update. Focus, 19(4), 430–446. https://doi.org/10.1176/appi.focus.20210015

[6]. Lovell, K., Cox, D., Haddock, G., Jones, C., Raines, D., Garvey, R., … Hadley, S. (2007). Telephone administered cognitive behavior therapy for the treatment of obsessive-compulsive disorder: Randomised controlled non-inferiority trial. Focus, 5(3), 338–343. https://doi.org/10.1176/foc.5.3.foc338

[7]. Kayser, R. R., Gershkovich, M., Patel, S., & Simpson, H. B. (2021). Integrating videoconferencing into treatment for obsessive-compulsive disorder: Practical strategies with case examples. Psychiatric Services, 72(7), 840–844. https://doi.org/10.1176/appi.ps.202000558

[8]. Pinto, A., Teller, J., & Wheaton, M. G. (2022). Obsessive-compulsive personality disorder: A review of symptomatology, impact on functioning, and treatment. Focus, 20(4), 389–396. https://doi.org/10.1176/appi.focus.20220058

[9]. Geller, D. A., Biederman, J., Stewart, S. E., Mullin, B., Martin, A., Spencer, T. J., … Faraone, S. V. (2003). Which SSRI? A meta-analysis of pharmacotherapy trials in pediatric obsessive-compulsive disorder. American Journal of Psychiatry, 160(11), 1919-1928. https://doi.org/10.1176/appi.ajp.160.11.1919

[10]. March, J. S., Franklin, M. E., Foa, E., & Kozak, M. (2004). Cognitive-behavioral psychotherapy for pediatric obsessive-compulsive disorder. Journal of Clinical Child and Adolescent Psychology, 33(3), 443-449. https://doi.org/10.1207/s15374424jccp3303_7

[11]. Blomstedt, P., Sjöberg, R. L., Hansson, M., Bodlund, O., & Hariz, M. I. (2015). Deep brain stimulation in the treatment of obsessive-compulsive disorder. Focus, 13(2), 213–221. https://doi.org/10.1176/appi.focus.130216


Cite this article

Ma,X. (2025). Understanding and Treating Obsessive-compulsive Disorder: The Interplay of Genetic, Environmental, and Therapeutic Factors. Lecture Notes in Education Psychology and Public Media,84,90-96.

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Volume title: Proceedings of the 3rd International Conference on Social Psychology and Humanity Studies

ISBN:978-1-83558-937-3(Print) / 978-1-83558-938-0(Online)
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Conference date: 14 February 2025
Series: Lecture Notes in Education Psychology and Public Media
Volume number: Vol.84
ISSN:2753-7048(Print) / 2753-7056(Online)

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References

[1]. Greist, J. H., & Jefferson, J. W. (2007). Obsessive-compulsive disorder. Focus, 5(3), 283–298. https://doi.org/10.1176/foc.5.3.foc283

[2]. Mattheisen, M., Pato, M. T., Pato, C. N., & Knowles, J. A. (2021). What have we learned about the genetics of obsessive-compulsive and related disorders in recent years? Focus, 19(4), 384–391. https://doi.org/10.1176/appi.focus.20210017

[3]. Stewart, S. E., & Pauls, D. L. (2010). The genetics of obsessive-compulsive disorder. Focus, 8(3), 350–360. https://doi.org/10.1176/foc.8.3.foc350

[4]. Senter, M. S., Patel, S. R., Dixon, L. B., Myers, R. W., & Simpson, H. B. (2021). Defining and addressing gaps in care for obsessive-compulsive disorder in the United States. Psychiatric Services, 72(7), 784–793. https://doi.org/10.1176/appi.ps.202000296

[5]. Van Noppen, B., Sassano-Higgins, S., Appasani, R., & Sapp, F. (2021). Cognitive-behavioral therapy for obsessive-compulsive disorder: 2021 update. Focus, 19(4), 430–446. https://doi.org/10.1176/appi.focus.20210015

[6]. Lovell, K., Cox, D., Haddock, G., Jones, C., Raines, D., Garvey, R., … Hadley, S. (2007). Telephone administered cognitive behavior therapy for the treatment of obsessive-compulsive disorder: Randomised controlled non-inferiority trial. Focus, 5(3), 338–343. https://doi.org/10.1176/foc.5.3.foc338

[7]. Kayser, R. R., Gershkovich, M., Patel, S., & Simpson, H. B. (2021). Integrating videoconferencing into treatment for obsessive-compulsive disorder: Practical strategies with case examples. Psychiatric Services, 72(7), 840–844. https://doi.org/10.1176/appi.ps.202000558

[8]. Pinto, A., Teller, J., & Wheaton, M. G. (2022). Obsessive-compulsive personality disorder: A review of symptomatology, impact on functioning, and treatment. Focus, 20(4), 389–396. https://doi.org/10.1176/appi.focus.20220058

[9]. Geller, D. A., Biederman, J., Stewart, S. E., Mullin, B., Martin, A., Spencer, T. J., … Faraone, S. V. (2003). Which SSRI? A meta-analysis of pharmacotherapy trials in pediatric obsessive-compulsive disorder. American Journal of Psychiatry, 160(11), 1919-1928. https://doi.org/10.1176/appi.ajp.160.11.1919

[10]. March, J. S., Franklin, M. E., Foa, E., & Kozak, M. (2004). Cognitive-behavioral psychotherapy for pediatric obsessive-compulsive disorder. Journal of Clinical Child and Adolescent Psychology, 33(3), 443-449. https://doi.org/10.1207/s15374424jccp3303_7

[11]. Blomstedt, P., Sjöberg, R. L., Hansson, M., Bodlund, O., & Hariz, M. I. (2015). Deep brain stimulation in the treatment of obsessive-compulsive disorder. Focus, 13(2), 213–221. https://doi.org/10.1176/appi.focus.130216