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This article reviews various hair abnormalities in adolescents and young adults and emphasizes the importance of timely diagnosis and education for optimal patient outcomes, but it reports no new clinical results.

This article reviews the social and functional impact of eyebrow loss and highlights the limited treatment options compared to scalp alopecia, but reports no new clinical results.

This study found that patients with myotonic dystrophy types 1 and 2 often exhibit skin abnormalities, which correlate with genotype severity and serum vitamin D levels, and suggest premature aging.

This study found that NIH hairless mice exhibit abnormalities in hair growth and immune-related pathways, with Pik3r1 and Pik3r3 identified as key genes for further investigation.

This review summarizes the cell type distribution and functional significance of human keratins, emphasizing their roles in tumor diagnosis and potential clinical applications, and reports no new clinical findings.

This essay reviews the role of human scalp hair follicles in the "brain-skin connection," highlighting their dual function as targets and sources of neurohormones, without reporting new experimental results.

This narrative review discusses the mixed and evolving evidence regarding glucagon-like peptide-1 receptor agonists (GLP-1 RAs) and their influence on erectile dysfunction in men with type 2 diabetes and obesity, highlighting potential benefits and concerns yet to be clarified.

This study found that platelet-rich plasma injections significantly improved olfactory function in patients with long-lasting postviral olfactory dysfunction, suggesting potential as a therapeutic strategy.

This review highlights the hair follicle's structural and functional properties as an effective route for delivering active compounds in treating hair disorders, focusing on emerging carrier technologies to enhance targeted transfollicular delivery.

This study observed that Cyp27b1−/− mice exhibited growth and skeletal abnormalities similar to those of Vdr−/− mice, despite differences like the development of alopecia in Vdr−/− mice, suggesting that 1α,25D3 may directly influence chondrocyte proliferation and differentiation.

This mini-review discusses human hair follicle development and summarizes genetic disorders linked to abnormalities in hair follicle morphogenesis, structure, or regeneration, but reports no new experimental results.

This article explores how various nutrients and metabolic processes impact wool and hair follicle function in animals but reports no new experimental findings.

This case study reports the first instance of irreversible alopecia universalis occurring during pegylated interferon-ribavirin therapy in a man with hepatitis C infection, without evidence of immunological or thyroid disorders.

This study found that serum cystatin C levels may be elevated in adolescent females with PCOS, suggesting it could serve as a predictive marker for metabolic and cardiovascular issues independent of renal function.

This report describes a child and his father with hereditary hypotrichosis simplex, an uncommon isolated form of hair loss, with no other ectodermal or systemic abnormalities noted.

This study found that forelimb amputation in raccoon dogs with severe limb injuries resulted in satisfactory three-limb function, enabling them to run faster and maintain good body condition post-operation.

This article reviews the challenges in treating PCOS, noting the potential benefits of insulin sensitizers on ovulatory function and pregnancy outcomes, and calls for more long-term studies on metabolic interventions.

In this study, homozygous VDR null mutant mice exhibited nonfunctional vitamin D receptors, leading to growth abnormalities and revealing the limited physiological importance of vitamin D pathways outside the classical receptor.

This review summarizes existing knowledge on the role of FOXN1 as a key regulator of thymic epithelial cell lineage and function, reporting no new experimental results.

This study suggests that coexisting LSS and TSPEAR variants might contribute to a complex phenotype of congenital hypotrichosis and ectodermal abnormalities in a child, and highlights the need for cautious interpretation of genotype-phenotype links and the potential value of broader genetic testing.

This case report suggests that a proactive physical therapy model can be effective for improving physical function and meeting exercise guidelines in patients newly diagnosed with systemic lupus erythematosus.

This study suggests that unliganded vitamin D receptors in mice may cause more severe skeletal and mineral ion defects than VDR-null conditions, and vitamin D analogues may restore function in specific VDR mutations.

In this study, an unexpected premature birth of two goat kids occurred following prostaglandin administration in a timed artificial insemination protocol, with both kids exhibiting congenital abnormalities such as laryngotracheal swelling and generalized alopecia.

In this study of women with PCOS, hirsutism strongly correlated with metabolic abnormalities, while acne and androgenic alopecia were not clear markers of biochemical hyperandrogenemia or metabolic dysfunction.

This study found that knocking down P-cadherin expression in cultured human hair follicles recreates the hair abnormalities seen in patients with hypotrichosis with juvenile macular dystrophy.

This review discusses the molecular role of the vitamin D receptor in regulating various biological actions such as bone mineralization and reports no new clinical results, highlighting the complexity of vitamin D's function in multiple tissues.

This study found that while MK-0773 significantly increased lean body mass in sarcopenic frail elderly women, it did not significantly improve muscle strength or physical function compared to placebo.

This article reviews the impact of nutritional deficiencies on hair health, detailing how they can cause structural abnormalities, pigmentation changes, or hair loss; it presents no new clinical findings.

This review examines the role of retinoic acid synthesis in hair follicles and sebaceous glands, focusing on its localization and function during normal and disease states, but reports no new results.

This review highlights essential preoperative assessments for ophthalmologists and non-oculo-facial surgeons performing upper facial rejuvenation, emphasizing the importance of understanding ocular and periocular anatomy to achieve both cosmetic and functional improvements.