Bidirectional Relationship Between Atopic Dermatitis and Psychiatric Comorbidities in Individuals of European Ancestry: A Mendelian Randomization Study

Atopic dermatitis is a chronic inflammatory skin disorder that significantly impacts quality of life and is often associated with psychiatric comorbidities. How-ever, the causal relationship between atopic dermatitis and psychiatric disorders remains unclear. This study employed bidirectional 2-samp...

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Main Authors: Zhe Wu, Chenglong Wu, Xuanyi Chen, Qiufang Qian, Zhirong Yao
Format: Article
Language:English
Published: Medical Journals Sweden 2025-05-01
Series:Acta Dermato-Venereologica
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Online Access:https://medicaljournalssweden.se/actadv/article/view/43133
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author Zhe Wu
Chenglong Wu
Xuanyi Chen
Qiufang Qian
Zhirong Yao
author_facet Zhe Wu
Chenglong Wu
Xuanyi Chen
Qiufang Qian
Zhirong Yao
author_sort Zhe Wu
collection DOAJ
description Atopic dermatitis is a chronic inflammatory skin disorder that significantly impacts quality of life and is often associated with psychiatric comorbidities. How-ever, the causal relationship between atopic dermatitis and psychiatric disorders remains unclear. This study employed bidirectional 2-sample Mendelian randomization to investigate the potential causal relationships between atopic dermatitis and 8 psychiatric conditions: depression, anxiety, autism spectrum disorder, attention deficit hyperactivity disorder, suicidality, bipolar disorder, obsessive-compulsive disorder, and schizophrenia. Genetic instruments were derived from large-scale genome-wide association studies of European ancestry. Forward Mendelian randomization analysis indicated that atopic dermatitis causally increases the risk of anxiety (inverse variance weighting p = 0.016; odds ratio = 1.110, 95% confidence interval: 1.019–1.208). Reverse Mendelian randomization analysis revealed a significant causal effect of bipolar disorder on increasing the risk of atopic dermatitis (inverse variance weighting p = 0.005; odds ratio = 1.062, 95% confidence interval: 1.018–1.107). No significant causal relationships were found for other psychiatric conditions. Sensitivity analyses confirmed the robustness of these findings, with no evidence of horizontal pleiotropy. These results highlight the need for integrated dermatological and psychiatric care, emphasizing early mental health screening for atopic dermatitis patients and dermatological evaluation for individuals with bipolar disorder. Future research should explore underlying biological mechanisms and validate findings across diverse populations.
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spelling doaj-art-d13dc95cd2274ba48c642f9dff7a06892025-08-20T03:49:41ZengMedical Journals SwedenActa Dermato-Venereologica0001-55551651-20572025-05-0110510.2340/actadv.v105.43133Bidirectional Relationship Between Atopic Dermatitis and Psychiatric Comorbidities in Individuals of European Ancestry: A Mendelian Randomization StudyZhe Wu0Chenglong Wu1Xuanyi Chen2Qiufang Qian3Zhirong Yao4Dermatology Center, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, ChinaDermatology Center, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, ChinaDermatology Center, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, ChinaDepartment of Dermatology, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, ChinaDermatology Center, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, ChinaAtopic dermatitis is a chronic inflammatory skin disorder that significantly impacts quality of life and is often associated with psychiatric comorbidities. How-ever, the causal relationship between atopic dermatitis and psychiatric disorders remains unclear. This study employed bidirectional 2-sample Mendelian randomization to investigate the potential causal relationships between atopic dermatitis and 8 psychiatric conditions: depression, anxiety, autism spectrum disorder, attention deficit hyperactivity disorder, suicidality, bipolar disorder, obsessive-compulsive disorder, and schizophrenia. Genetic instruments were derived from large-scale genome-wide association studies of European ancestry. Forward Mendelian randomization analysis indicated that atopic dermatitis causally increases the risk of anxiety (inverse variance weighting p = 0.016; odds ratio = 1.110, 95% confidence interval: 1.019–1.208). Reverse Mendelian randomization analysis revealed a significant causal effect of bipolar disorder on increasing the risk of atopic dermatitis (inverse variance weighting p = 0.005; odds ratio = 1.062, 95% confidence interval: 1.018–1.107). No significant causal relationships were found for other psychiatric conditions. Sensitivity analyses confirmed the robustness of these findings, with no evidence of horizontal pleiotropy. These results highlight the need for integrated dermatological and psychiatric care, emphasizing early mental health screening for atopic dermatitis patients and dermatological evaluation for individuals with bipolar disorder. Future research should explore underlying biological mechanisms and validate findings across diverse populations. https://medicaljournalssweden.se/actadv/article/view/43133Causal relationshipAtopic dermatitisPsychiatric comorbidityMendelian randomization
spellingShingle Zhe Wu
Chenglong Wu
Xuanyi Chen
Qiufang Qian
Zhirong Yao
Bidirectional Relationship Between Atopic Dermatitis and Psychiatric Comorbidities in Individuals of European Ancestry: A Mendelian Randomization Study
Acta Dermato-Venereologica
Causal relationship
Atopic dermatitis
Psychiatric comorbidity
Mendelian randomization
title Bidirectional Relationship Between Atopic Dermatitis and Psychiatric Comorbidities in Individuals of European Ancestry: A Mendelian Randomization Study
title_full Bidirectional Relationship Between Atopic Dermatitis and Psychiatric Comorbidities in Individuals of European Ancestry: A Mendelian Randomization Study
title_fullStr Bidirectional Relationship Between Atopic Dermatitis and Psychiatric Comorbidities in Individuals of European Ancestry: A Mendelian Randomization Study
title_full_unstemmed Bidirectional Relationship Between Atopic Dermatitis and Psychiatric Comorbidities in Individuals of European Ancestry: A Mendelian Randomization Study
title_short Bidirectional Relationship Between Atopic Dermatitis and Psychiatric Comorbidities in Individuals of European Ancestry: A Mendelian Randomization Study
title_sort bidirectional relationship between atopic dermatitis and psychiatric comorbidities in individuals of european ancestry a mendelian randomization study
topic Causal relationship
Atopic dermatitis
Psychiatric comorbidity
Mendelian randomization
url https://medicaljournalssweden.se/actadv/article/view/43133
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AT xuanyichen bidirectionalrelationshipbetweenatopicdermatitisandpsychiatriccomorbiditiesinindividualsofeuropeanancestryamendelianrandomizationstudy
AT qiufangqian bidirectionalrelationshipbetweenatopicdermatitisandpsychiatriccomorbiditiesinindividualsofeuropeanancestryamendelianrandomizationstudy
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