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Androgens can cause hair growth in some areas and hair loss on the scalp.

This study found that RXRα/RARγ heterodimers are necessary for retinoic acid-induced keratinocyte proliferation in the skin, while normal epidermal maintenance does not require RAR-mediated signaling.

This study found that overexpressing Dsg3 in the suprabasal epidermis of transgenic mice resulted in flaking skin and abnormal hair growth, supporting Dsg3's role in regulating epidermal differentiation.

This review discusses the genetic factors involved in hair follicle morphogenesis and cycling and reports no new clinical results; it emphasizes the role of genes in hereditary hair diseases.

This study found that beard hair medulla cells express an unexpected range of keratins, showing variability and promiscuous behavior in keratin interactions distinct from other hair follicle cells.

Long-standing benign tumors can become cancerous, especially in people with weakened immune systems.

This review discusses the dermatologic features of PCOS as potential early indicators of the syndrome and notes that treatment of these conditions may enhance quality of life and psychological well-being, but it reports no new clinical results.

This study found that overexpression of Hoxc13 in GC13 mouse models affects hair follicle differentiation by interacting with medulla-specific genes, particularly Foxq1, suggesting a regulatory pathway for medulla differentiation.

This article reviews the diagnosis and treatment of tinea capitis in children, noting that newer antifungal agents can offer effective systemic therapy alongside supportive topical treatments; it reports no new clinical findings.

In this study, researchers found that Asian hair contains more integral lipids than European or African hair, which may protect it better from UV-induced damage.

This article reviews major types of genetic hair shaft defects and associated syndromes, emphasizing understanding histologic features and diagnostic methods, but reports no new clinical findings.

This review discusses prolactin production and regulation in human skin and hair follicles, highlighting its potential broader implications but reports no new empirical results.

This study found that transgenic mice expressing human keratin K8 in the epidermis showed increased progression of skin lesions toward malignancy, suggesting a role for K8 in the development of invasive skin cancer.

This article discusses how drug molecules integrate into hair fibers, focusing on biological transport mechanisms and physicochemical factors, but reports no new experimental findings.

This study observed that epidermal growth factor and fibroblast growth factor have distinct roles in sheep skin, with EGF involved in differentiation and FGF in bulb proliferation and fiber growth.

This review highlights that in children, hair loss can be attributed to diverse conditions like alopecia areata and tinea capitis, and stresses the importance of a holistic approach to diagnosis and management, including psychosocial support due to limited effective treatments.

The study found that exposing Arbas Cashmere goats to a short photoperiod significantly increased cashmere production by extending the anagen phase of hair follicles, with gene expression changes identified as contributing factors.

This review discusses neutrophil-associated and infiltrative scarring alopecias, as well as promising new treatments, but reports no new clinical results.

Older adults commonly experience wrinkles, itchy skin, psoriasis, fungal infections, skin growths, grey hair, hair loss, and nail ridging, but no skin cancer was found in this group.

This review discusses evidence-based treatments for common hair loss forms, noting robust support for androgenetic alopecia therapies but limited long-term data and fewer high-quality studies for alopecia areata and cicatricial alopecias.

Most hair loss in children is caused by a few common conditions, and it's important to diagnose these properly and support the child's mental health.

This review introduces an integrated view of hair follicle behavior, highlighting a Yin Yang model of regulation and suggesting glycans as key elements in hair follicle growth control, without reporting new clinical findings.

This study reports that milk goats exhibit significantly more differentially expressed genes related to hair follicle cycling across different months compared to cashmere goats, especially in December.

In this study, researchers found that petroleum ether extract of Eclipta alba significantly stimulated follicular keratinocyte proliferation and reduced TGF-β1 expression in nude mice, suggesting potential use for certain types of alopecia.

This study found that the activation of ER‑β increased keratinocyte proliferation and gene expression related to epidermal regeneration, enhancing wound healing in both cell models and rats.

This study found that low-level laser therapy may have promising effects on hair regrowth in dogs with noninflammatory alopecia, with most animals showing improvement after treatment.

In this study, researchers observed that mice with the naked gene showed frequent absence of hair cuticle and cortical cells during follicle growth, with abnormal keratin deposition also noted.

This article discusses the aging-related changes in hair structure and function, and examines various treatments like light therapy, minoxidil, and finasteride aimed at mitigating hair thinning and loss, but reports no new clinical results.

This study established an androgen-responsive human organ culture model using hair follicles, demonstrating that women's intermediate facial follicles grow more hair in response to men's higher androgen levels.

This review discusses the cutaneous side effects of chemotherapy, noting that they frequently involve changes to skin, hair, and nails, and reports no new results.