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This study observed that dandruff-affected scalp skin has increased T-cell infiltration in the epidermis and a reduction in the hair follicle's physiological immune privilege, particularly in the suprabulbar outer root sheath area, indicating a distinct immune microenvironment compared to healthy scalp.

This study observed that dandruff is linked to a weakened immunoprivilege in hair follicles, with reduced Langerhans cells and increased epidermal CD4+ and CD8+ T cell infiltration.

This study found that overexpression of PKCα in mouse epidermis increases expression of specific proinflammatory mediators and induces inflammation but does not significantly affect epidermal differentiation, proliferation, or tumor promotion with TPA.

This study found that H-Ras activation in aged mouse skin leads to increased dysplasia and progression to in situ squamous cell carcinoma, highlighting an age-linked connection between immune changes, senescence, and cancer risk.

This article discusses the cutaneous side effects of erlotinib, an EGFR inhibitor, in a patient with non-small cell lung cancer, reporting nonscarring alopecia and indicative scalp biopsy findings.

This study observed that transgenic mice expressing keratin K10 under bovine K6beta control developed severe oral abnormalities, suggesting keratin composition changes can affect the physiology of epithelial cells, especially in the oral mucosa.

This study found that feeding mice a high-fat diet with fish oil leads to hair loss through a mechanism involving omega-3 fatty acids and TNF-α signaling, with epidermal fatty acid binding protein playing a key role.

This research suggests that hair follicle-derived cytokines IL-7 and IL-15 are crucial for maintaining resident memory T cells in the skin, which may be relevant for diseases like cutaneous T cell lymphoma.

This study found that overexpression of Gsdma3 in mice led to epidermal hyperplasia, skin inflammation, and hair growth defects, suggesting gain-of-function mutations in Gsdma3 cause these conditions.

In a conditional knockout mouse model, this study found that loss of the transcription elongation factor SPT6 in basal keratinocytes led to psoriasis-like skin inflammation and delayed wound healing, suggesting SPT6 plays a crucial role in maintaining epidermal immune quiescence by suppressing proinflammatory NF-κB signaling.

In this study, mice lacking the Mcpip1 gene in their myeloid cells did not develop SCC-like tumors but instead showed increased melanocyte activity and hair loss, indicating a distinct role for myeloid Mcpip1 in skin cancer development compared to keratinocyte Mcpip1.

In this study, researchers found that the loss of SETDB1 in epidermal keratinocytes led to altered chromatin states, increased ERV expression, and activation of immune responses, while inhibiting these effects with certain antiviral drugs reduced skin inflammation and hair loss in a mouse model.

This study found that sulfated CCK octapeptide reduces psoriasis-like skin inflammation in mice, suggesting a new pathophysiological role for CCK in regulating epidermal inflammation.

This study found that activating Wnt/beta-catenin signaling in hair follicles is sufficient to induce adipocyte generation in the dermis, affecting both hair follicle stem cell activation and adipocyte differentiation.

This study found that Wnt secretion is important for maintaining skin homeostasis in mice, as Evi-deficient mice developed psoriasis-like skin lesions and had an imbalance in immune cell populations.

This article discusses the histologic features of psoriasis, including psoriasiform epidermal hyperplasia and neutrophilic involvement, but reports no new clinical findings.

This study found that adipose-derived stem cell extracellular vesicles reduced wrinkles and promoted cell proliferation in UVB-induced photoaging in mice by decreasing oxidative stress and inflammation.

This case report describes how discontinuing the EGFR inhibitor gefitinib led to rapid improvement of erosive scalp pustules in a woman with non-small-cell lung cancer, despite previous antibiotic and steroid treatment failures.

Some patients with Alopecia Areata experience itch due to immune cells and enzymes that cause itching.

This study reports two cases of erlotinib-induced erosive pustular dermatosis of the scalp in patients with non-small cell lung cancer, emphasizing the need for dermatological monitoring during EGFR inhibitor therapy.

This case report describes a non-thymoma-associated exfoliative dermatitis in an 8-year-old cat, where treatment with cyclosporine A alongside prednisolone and antibiotics resolved skin lesions without relapse after an initial recurrence.

This infographic compares the safety profiles of SH‑1, a cosmetic ingredient, which showed no systemic absorption, and PP405, an investigational drug with dose-dependent systemic uptake and potential threshold breaches, highlighting differences in safety between cosmetic and investigational substances according to this report.

This study in a Lithuanian veterinary clinic observed diverse histomorphological skin changes in alopecic dogs caused by various rare diseases, including hyperkeratinization and pigmentation disorders.

This study characterized a novel form of mural folliculitis in dogs, resembling human pseudopelade, marked by persistent alopecia, lymphocyte infiltration, and severe follicular atrophy without effective treatment response.

In this study, implantable vascularized engineered thrombi using autologous whole blood improved skin wound healing in rats by promoting robust microcapillary networks and accelerating healing processes.

This study observed that exposure to heavy metal salts affected skin and hair morphology in mice, with lead acetate decreasing keratinocyte proliferation and zinc sulfate and sodium dichromate increasing it.

Lichen planopilaris and frontal fibrosing alopecia are likely distinct diseases with different tissue involvement.

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 found that conditional knockout of N-WASP in keratinocytes of mice led to skin barrier defects, increased immune cell infiltration, and hyperproliferation of keratinocytes, indicating its crucial role in skin homeostasis.

This study identified specific reflectance confocal microscopy features that help differentiate scarring from non-scarring alopecia, providing a non-invasive diagnostic tool.