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Article Abstract
Introduction: Psychodermatologic conditions include primary psychodermatologic disorders (PPDs), psychological conditions manifesting with dermatologic symptoms, and psychophysiological disorders, dermatologic conditions influenced by psychological stress. Despite their clinical significance and considerable impact on quality of life, the comprehensive epidemiology and neuropsychiatric comorbidity profiles of these disorders remain limited.
Objectives: To evaluate the prevalence and comorbidity profiles of psychodermatologic conditions in a diverse, population-based cohort.
Methods: A nested, case-control study was conducted using data from the All of us research program. From 287,011 eligible participants, 984 patients with PPDs (trichotillomania, skin picking disorder, dermatitis artefacta, body dysmorphic disorder, delusions of parasitosis) and 40,535 patients with psychophysiological disorders (psoriasis, atopic dermatitis, acne vulgaris, hidradenitis suppurativa, vulvodynia) were identified using International Classification of Diseases, 10th Revision, Clinical Modification codes. Each patient was paired with 4 controls based on age, sex, and race/ethnicity using nearest-neighbor propensity score matching. Multivariable logistic regression calculated adjusted odds ratios (aOR) and 95% confidence intervals to evaluate associations with various neuropsychiatric comorbidities.
Results: PPDs showed low point prevalences (range: ≤0.01-0.17%) but demonstrated markedly higher odds of neuropsychiatric comorbidities, including depressive disorders (range: aOR, 5.72-13.94), anxiety disorders (range: aOR, 5.96-8.40), and personality disorders (range: aOR, 8.67-13.56 Psychophysiological disorders had higher prevalence rates (range: 0.14%-5.72%) but showed more moderate associations, including depressive disorders (range: aOR, 2.24-3.13), neurodevelopmental disorders (range: aOR, 1.20-2.36), and sleep-wake disorders (range: aOR, 2.25-3.95).
Conclusions: Findings reveal distinct but overlapping comorbidity profiles between PPDs and psychophysiological disorders, emphasizing the need for tailored interventions that address the psychosocial and biological complexities of these conditions.
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