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Allergic contact dermatitis may promote hair growth by activating hair follicle stem cells.

This review examines the role of innate lymphoid cells in allergic diseases and the influence of an allergic microenvironment on their plasticity, without reporting new clinical outcomes.

This study found that activation of cannabinoid 1 receptors in human scalp hair follicles may limit excessive mast cell activation and maturation, suggesting a potential therapeutic strategy for managing MC-dependent skin diseases.

Langerhans cells are crucial for skin immunity and allergic reactions.

Alopecia totalis/universalis involves more intense immune activity and inflammation than patchy alopecia areata.

This study indicates that individuals exposed to PPD mount varying immune responses, with either tolerance, subclinical inflammation, or allergy, suggesting no true non-responders to PPD.

This study identified that the MC-5-HT-HTR2A axis plays a role in chronic pruritus in a mouse model of SADBE-induced allergic contact dermatitis, suggesting potential for therapeutic targeting.

This study found that fermented red ginseng marc alleviated atopic dermatitis-like symptoms in mice, demonstrating antioxidant and anti-inflammatory effects similar to those of dexamethasone.

This study found that fermented red ginseng marc alleviated skin lesions, reduced inflammation, and demonstrated antioxidant effects in an AD-like mouse model, suggesting potential therapeutic applications for atopic dermatitis.

This study found that in mouse models, the novel NF-κB inhibitor DHMEQ improved symptoms of atopic dermatitis as effectively as tacrolimus or betamethasone.

This study found that silver nanoparticles biofabricated using Ostericum koreanum leaf extract inhibited inflammatory cytokine production in stimulated human mast cell lines, suggesting potential use in treating mast cell-mediated allergic diseases.

This study found that anti-TNF therapy-induced alopecia exhibits distinct clinical and histopathological features and can mimic psoriatic alopecia and alopecia areata, with some patients improving with topical treatment.

This research investigated immune cell involvement in various types of inflammatory alopecia by analyzing gene expression data from scalp samples, revealing distinct cellular changes in conditions like Alopecia Areata, Frontal Fibrosing Alopecia, Lichen Planopilaris, and Central Centrifugal Cicatricial Alopecia, which may inform future therapeutic targets.

This review discusses the regulatory roles of type 2 alarmin cytokines in skin immunity, focusing on their implications in host defense, chronic inflammation, and cancer, but reports no new clinical results.

This review discusses the shared biological mechanisms between allergy and autoimmunity, emphasizing pruritus as a central symptom in psychophysiological dermatoses, and reports no new clinical results.

This review discusses the effects of visible light on human skin, highlighting its role in pigmentation, thermal damage, and the treatment of several skin conditions, while noting limited sunscreen protection against it; no new clinical results are reported.

This review highlights the increasing clinical applications of high-frequency ultrasonography in dermatology, particularly for assessing the depth of skin tumors and monitoring inflammatory skin diseases, but reports no new clinical results.

This review describes the variety of mucocutaneous side effects caused by antineoplastic chemotherapy, with emphasis on skin, nails, and mucous membranes, while highlighting potential severity and the possibility of needing to adjust or interrupt treatment in rare cases; it presents no new clinical results.

This study established a new mouse model for TCE-induced skin sensitization and reported that proinflammatory cytokines TNF-α, IFN-γ, and IL-2 significantly contribute to this sensitization process.

This study observed that zinc deficiency in humans and mice was associated with diminished allergic contact dermatitis but increased severity and duration of irritant contact dermatitis.

This study observed significant skin changes, including epidermal thickening and pleomorphic keratinocytes, in rats after subchronic UVB irradiation, highlighting specific reactions in the dorsal skin.

This study found that atopic diseases such as atopic dermatitis, asthma, and allergic rhinitis increase the risk of developing alopecia areata, suggesting a significant role for T cell-related inflammation in the condition's mechanism.

Collagen VII helps skin heal and stay strong, sirolimus may lower skin cancer risk in kidney transplant patients, high-molecular-mass hyaluronan helps naked mole rats resist cancer, dermal γδ T cells aid in hair growth in rodents, and overexpression of IL-33 in mouse skin causes itchiness, offering a model for studying allergic inflammation treatments.

This report details a case study where a 40-year-old woman experienced allergic contact dermatitis and angioedema-like symptoms after using PPD-containing hair dye. Patch testing confirmed a positive reaction to PPD, highlighting the substance's potential to cause both T-cell and IgE-mediated hypersensitivity reactions.

This study conducted a review of clinical studies from 2020 to 2025 on exosome-based dermatologic therapies, reporting improvements in skin conditions like wrinkles and scars, though with noted limitations such as small sample sizes and potential conflicts of interest.

The researchers reported that in patients with contact dermatitis, certain immune and skin barrier biomarkers, such as Th-cell mediated markers and cholesterol derivatives, may help distinguish between irritant and allergic subtypes, suggesting potential for improved diagnosis through integrated analysis.

This review article explores the current use and evidence of stem cell therapy in dermatology, detailing its applications, benefits, and limitations across various skin disorders, while also addressing teledermatology's rise during COVID-19 and proposing its ongoing integration into healthcare delivery.

This study found that surface modified nanoparticles showed increased skin permeation and improvement in allergic contact dermatitis, independent of the follicular pathway.

In this study, researchers found that serum granulysin levels might serve as a novel marker for disease activity in acute alopecia areata, being significantly associated with broader bald skin areas, poorer prognosis, and co-existing allergic disorders.

This review outlines the histological structures of the skin, highlighting species and regional differences in dermal absorption and obstacles encountered in toxicological assessments due to epidermal thickness variability, contact dermatitis reactions, and stem cell vulnerabilities.