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T cells affect skin cell genes in inflammatory diseases, and therapy can normalize these changes.

This study suggests that keratinocytes derived from hair follicles of patients with atopic dermatitis provide a useful model for investigating AD-related inflammation, as they showed greater expression changes of AD markers when stimulated with type 2 cytokines compared to those from healthy donors.

This study found that a quinazoline derivative, SH-340, increased skin barrier-associated factors and inhibited TSLP expression and STAT6 phosphorylation in human primary keratinocytes, suggesting potential benefits for alleviating inflammation and improving skin barrier function in atopic dermatitis.

This article reviews the emerging non-inflammatory roles of regulatory T cells in the skin and reports no new clinical findings, suggesting broad biological influence beyond traditional immune functions.

This study found that while Platelet Rich Plasma injections led to some clinical and immunological improvements in psoriatic plaques, it could not be recommended as a standalone treatment for localized plaque psoriasis.

This article discusses adverse immune-mediated skin reactions associated with TNF-alpha inhibitors, highlighting paradoxical reactions such as psoriasis that occur despite being treated with medications intended to alleviate the condition.

This case report describes a 50-year-old woman with palmoplantar psoriasis who developed alopecia areata after starting tildrakizumab, suggesting a possible paradoxical reaction related to the medication.

This systematic review reported an association between specific interleukin gene polymorphisms (IL-17A, IL-18, IL17RA, and IL16) and alopecia areata, suggesting further genetic studies are needed to confirm the interleukins' role in the disorder's progression.

In this study, researchers found that cytokine dysregulation linked to genetic background is present in both patients and healthy but genetically related individuals in two autoimmune skin diseases, Pemphigus vulgaris and Alopecia areata, suggesting that protective immune mechanisms may prevent disease manifestation in predisposed individuals.

This research notes that biologics and small molecules are effective for treating nail psoriasis and alopecia areata, albeit with precautions for adverse events, but no clinical trials have been published for their use in treating nail lichen planus and atopic dermatitis.

TAK-279 effectively reduces psoriasis symptoms and is safe.

This review discusses how ionizing radiation causes skin damage by inducing cellular senescence in keratinocytes, which secrete inflammatory mediators, recruiting immune cells and exacerbating inflammation, impacting the skin barrier function and healing.

In this report, a 35-year-old female with palmoplantar pustulosis undergoing secukinumab treatment developed alopecia areata, a rare side effect attributed to paradoxical reactions with IL-17 inhibitors; switching to tofacitinib improved both conditions.

In this study, researchers found that using a 5-α reductase inhibitor may reduce inflammation-related cytokines associated with T-helper cell 1 and T-helper cell 2 in prostate tissues after surgery, but it did not affect those related to Th17 cells.

This review explores the role of Tregs in autoimmune skin diseases, transplantation, and skin cancer, and discusses Tregs-based therapies' potential for treating autoimmunity without reporting new experimental results.

In this study, conditional deletion of BRD4 in OX40-expressing cells of mice led to alopecia, dermatitis, and loss of hair follicle stem cell function, revealing BRD4's role in skin inflammation and stem cell regulation.

This study reports that skin bacteria can accelerate hair follicle regeneration and improve wound healing through IL-1β signaling, by activating keratinocytes in a pathway involving IL1R/Myd88.

This case report documents the first use of bimekizumab as monotherapy for dissecting cellulitis of the scalp, where a 27-year-old man experienced significant symptom relief without adverse effects after failing standard treatments.

This case report presents the first known instance of bimekizumab improving psoriatic scarring alopecia, suggesting potential benefits of dual IL-17A/IL-17F blockade for this rare and challenging condition, warranting further investigation.

This review highlights that iron deficiency is a significant yet often overlooked contributor to the development of immune-mediated inflammatory skin diseases, suggesting that iron dysregulation may drive inflammation and metabolic imbalances in conditions like psoriasis and atopic dermatitis.

This review synthesizes current evidence on therapies for dissecting cellulitis of the scalp, noting that biologics show promise for treatment-resistant cases, though systemic retinoids remain the first-line therapy.

In this case report, a 31-year-old male with refractory sycosis barbae achieved complete remission after 4 months of treatment with bimekizumab, suggesting this dual inhibitor of interleukin-17A and IL-17F may be a promising therapy for this condition.

This review examines the interconnected processes of atopic dermatitis and alopecia areata, highlighting shared immune imbalances, genetic factors, and microbiome influences, while analyzing current and emerging treatments and identifying gaps in understanding these overlapping conditions.

This study found that patients with patchy alopecia areata had significantly higher serum levels of pro-inflammatory cytokines IL-6, TNF-α, IL-17A, and IL-21 compared to healthy controls, with these levels correlating positively with disease severity, age, and disease duration.

In this study assessing post-menopausal Asian women, distinct shifts in Malassezia species prevalence on the skin were linked to increased inflammation and impaired skin barrier function, potentially driving disorders like psoriasis and seborrheic dermatitis.

This study found that exosomes and secretome derived from rat hair follicle stem cells show promising potential for wound healing and tissue repair, demonstrating significant wound closure and suggesting their broader applicability in regenerative medicine.

This study observed that, among alopecia areata patients in Fujian, China, lower IgG4 levels and higher IFN-γ levels were statistically significant, suggesting their potential role as biomarkers for the condition and highlighting avenues for future therapeutic developments.

This narrative review explored the complex interconnections between psoriasis and other dermatological conditions like vitiligo, alopecia areata, and atopic dermatitis, highlighting shared immune dysfunctions that complicate diagnosis and treatment, with implications for research and holistic patient care.

Secukinumab reduces immune activity in hidradenitis suppurativa skin.

In this review, the authors discuss how hair may protect against scalp skin cancer by enabling IL-17-biased immunosurveillance, while hair loss could permit tumor development by reducing this immune protection.