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Tryptophan and Brain Disorders / Dermatology and Skin Diseases · Journal article
Frontiers in Psychiatry · July 27, 2026
Raises a question worth testing. It does not answer one.
This narrative review synthesizes proposed neuroimmune mechanisms linking psoriasis and psychiatric comorbidity, emphasizing IL-23/Th17 inflammation, HPA axis dysregulation, microglial activation, and bidirectional skin-to-brain signaling. The work frames integrated dermatology-psychiatry treatment as a theoretical construct rather than presenting evidence from comparative trials, and calls for future biomarker-driven clinical research to test these mechanisms.
Narrative literature review. Studies addressing human or relevant animal models of psoriasis with psychiatric outcomes; case reports, editorials, and non-English publications excluded.. Intervention: Literature review of biological, neuroendocrine, and psychosocial pathways linking psoriasis to mental illness; no intervention administered..
Psoriasis-related psychological vulnerability is mediated primarily by IL-23/Th17-driven inflammation, HPA axis dysregulation, microglial activation, and neuroinflammation Bidirectional skin-to-brain loops and central-peripheral immune crosstalk lead to cytokine-mediated disruption of neurotransmission and maladaptive stress responses Psychosocial stressors and gut-brain interactions exacerbate chronic inflammation, emotional dysregulation, and psychological vulnerability
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
This review does not provide evidence to change current practice but proposes a mechanistic framework for clinicians to consider integrated dermatology-psychiatry models in future research. The authors explicitly call for biomarker-driven clinical trials to validate these theoretical constructs before implementation.
A narrative literature review synthesizing mechanistic pathways between psoriasis and psychiatric comorbidity; raises integrated treatment questions but does not present original empirical data or controlled evidence comparing outcomes.
As stated by the source record.
This review does not provide evidence to change current practice but proposes a mechanistic framework for clinicians to consider integrated dermatology-psychiatry models in future research. The authors explicitly call for biomarker-driven clinical trials to validate these theoretical constructs before implementation.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
What is missing. This record has no reported figures. That is a gap in the analysis, not a judgement about the study.
Background Psoriasis is a long-lasting, immune-related inflammatory skin disorder that has been increasingly recognized to be a systemic disorder with significant neuropsychiatric symptoms. Objective To critically evaluate the emerging neuroimmune and immune systems that link psoriasis and psychiatric comorbidities, and to assess the implications for treatment. Methods A comprehensive literature review was conducted to identify biological, neuroendocrine, and psychosocial pathways linking psoriasis to mental illness. We searched PubMed, Web of Science, and Scopus databases for articles published between January 2000 and December 2025 using keywords including “psoriasis”, “depression”, “anxiety”, “neuroinflammation”, “IL-23/Th17”, and “psychosocial stress”. Studies were included if they addressed human or relevant animal models of psoriasis with psychiatric outcomes, and excluded if they were case reports, editorials, or not published in English. References from retrieved articles were also screened to identify additional relevant studies. This approach ensures reproducibility and minimizes selection bias, consistent with narrative review standards. Results The most recent research indicates that psoriasis-related psychological vulnerability is mediated primarily by IL-23/Th17-driven inflammation, dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis, microglial activation, and neuroinflammation. These autoimmune conditions are linked by bidirectional skin-to-brain loops and central-peripheral immune crosstalk, which together lead to cytokine-mediated disruption of neurotransmission and maladaptive stress responses. In addition, stressors in psychosocial contexts and gut and brain interaction have been shown to further exacerbate chronic inflammation, emotional dysregulation, and psychological vulnerability. Immune-targeted biologics and structured psychotherapy may serve as complementary vehicles for the simultaneous treatment of skin inflammation and neurobehavioral outcomes. Conclusion This synthesis of mechanisms suggests that neuroimmune circuitry may serve as a unifying construct for understanding psoriasis-related psychiatric illnesses and provides a framework for developing integrated dermatology-psychiatry treatment models. Future work should focus on biomarker-driven, interdisciplinary clinical trials to facilitate the development of tailored treatment approaches.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.