November 2022 in “Chinese Journal of Dermatology” This review discusses the relationship between allergies and alopecia areata, highlighting potential roles for anti-allergy and desensitization therapies, but reports no new clinical results.
March 2026 in “Institutional Repositories DataBase (IRDB)” This study observed an association between intense itching in anterior chest keloids and an increased density of nerve fibers in the epidermis, alongside elevated expression of the pruritus mediator substance P, though no difference was found in Langerhans cells related to pruritus, location, or region.
February 2026 in “Journal of Allergy and Clinical Immunology” In this single-cell transcriptomic study, researchers analyzed AA scalp samples and found distinct immune and nonimmune cell activation patterns, with elevated TH1/TH2 and JAK/STAT markers potentially contributing to hair follicle immune privilege disruption and disease severity.
This study observed that patients using dupilumab for atopic dermatitis or chronic rhinosinusitis with nasal polyps may experience new-onset or worsening paradoxical alopecia areata, potentially due to unopposed Th1/Th17 immune activity following Th2 pathway blockade.
December 2025 in “Skin Health and Disease” This case report details the development of a psoriasiform rash and inflammatory alopecia in a 29-year-old man with severe atopic dermatitis following dupilumab treatment. The authors observed hair regrowth and eczema control after discontinuing dupilumab and beginning treatment with abrocitinib.
December 2025 in “Mycoses” In this study involving a murine skin infection model, researchers found that the Trichophyton mentagrophytes strain TIMM 2789, specific to rodents, induced typical symptoms of superficial dermatophytosis, while revealing that the fungal gene SUB6 is not essential for virulence.
September 2025 in “Figshare” This study conducted a scoping review and meta-analysis revealing a complex chemokine profile in alopecia areata patients, with elevated Th1, Th2, and other immune pathway chemokines, suggesting broader immunomodulatory strategies may help address the disease's multifaceted immune dysregulation.
September 2025 in “Figshare” In this scoping review and meta-analysis, researchers found that patients with alopecia areata exhibit complex chemokine profiles, with elevated levels of Th1, Th2, and other immune pathway-associated chemokines, suggesting the potential for broad immunomodulatory strategies to address the disease's immune dysregulation.
August 2025 in “Scientific Reports” In this study, researchers observed that intractable pruritus in anterior chest keloid lesions is linked to increased intraepidermal nerve fibre density and elevated expression of substance P, without differences in Langerhans cells across different keloid regions.
August 2025 in “JEADV Clinical Practice” In this case report, researchers documented a 71-year-old woman with both alopecia areata and bullous pemphigoid who showed significant improvement using dupilumab after other treatments failed, highlighting its potential for autoimmune diseases with overlapping inflammatory mechanisms.
August 2025 in “Dermatology and Therapy” This study conducted a meta-analysis of gene expression data from alopecia areata patients, identifying 5109 differentially expressed genes and highlighting enriched pathways like JAK-STAT signaling, providing insights into the disease's pathogenesis and potential treatment targets.
November 2024 in “The Journal of Dermatology” 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.
This study identified distinct immune differences in patients with alopecia areata, particularly those with atopic backgrounds, and highlighted the OX40 axis as a potential therapeutic target for the condition.
July 2024 in “Journal of Investigative Dermatology” IL-13 protein is much higher in the skin of atopic dermatitis patients than in healthy skin.
July 2024 in “Journal of Investigative Dermatology” Alopecia areata patients are more likely to develop keloids, especially if they also have atopic dermatitis.
June 2024 in “British Journal of Dermatology” This study observed that some patients experienced alopecia areata during dupilumab treatment for atopic dermatitis, but many regrew hair while continuing therapy.
February 2024 in “Veterinary sciences” This study found that canine pemphigus foliaceus skin lesions exhibit a distinct immune signature, with upregulated pro-inflammatory and Th17-related genes, showing similarities to human pemphigus. Further research using advanced sequencing is needed to better understand the disease's pathogenesis.
January 2024 in “Frontiers in endocrinology” This study found that genetic variants linked to hypothyroidism significantly increased the risk of developing alopecia areata, suggesting a causative connection between the two conditions.
January 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” In this study, the researchers found that deleting ceramide synthase 4 in the skin's epidermis alters stem cell differentiation, disrupting hair follicle structure and barrier function, potentially leading to immune responses similar to atopic dermatitis.
November 2023 in “International Journal of Dermatology” In this study, CCCA patients were found to have higher odds of metabolic, autoimmune, atopic, and psychiatric comorbidities compared to matched controls.
October 2023 in “Frontiers in Medicine” In a reported case, researchers observed full hair regrowth on the scalp, eyebrows, and eyelashes of a 4-year-old with alopecia universalis after 10 months of treatment with dupilumab, following resistance to baricitinib.
June 2023 in “Research Square (Research Square)” In this study, researchers used spatial transcriptome profiling to identify immune disturbances in the peri-infundibular region of androgenetic alopecia patients’ hair follicles, finding increased CD4+ T cells with a bias toward Th2 immune responses compared to controls.
April 2023 in “Journal of Investigative Dermatology” In this study, researchers developed a mouse model of scarring alopecia and observed significant reductions in CD200R expression in affected skin, potentially linking this signaling pathway to immune attacks on hair follicles and suggesting new treatment targets for scarring hair loss.
This research highlighted varying findings on the use of daily emollients for preventing atopic dermatitis in infants, with one study noting a reduction in incidence, while another found no preventive effect.
December 2022 in “Medical lasers” This study reviews the mechanism and potential treatment roles of low-level laser therapy for immune-mediated skin diseases, reporting no new clinical results.
October 2022 in “Portuguese journal of dermatology and venereology” This case study reports significant improvement in severe atopic dermatitis and alopecia areata symptoms in a patient treated with dupilumab, highlighting the potential for patient selection in optimizing therapeutic outcomes.
July 2022 in “British Journal of Dermatology” This study found that epidermal growth factor receptor inhibitors used in cancer treatment induce a distinct inflammatory response in hair follicles, marked by immune privilege collapse and upregulation of inflammatory pathways.
June 2022 in “Frontiers in Immunology” This report describes a case of alopecia universalis successfully treated with tofacitinib, though it was associated with increased peripheral blood cytokine levels.
April 2021 in “Journal of Investigative Dermatology” This study found that CD1a-restricted CD4+ T cells responsive to lysyl-phosphatidylglycerol were more frequent in the blood of atopic dermatitis patients, suggesting a potential role in the disease's Th2-mediated pathology.
March 2021 in “International Journal of Clinical Dermatology & Research” Dupilumab can help regrow hair in alopecia areata but stopping it may cause hair loss again.