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Most older adults experience pattern hair loss due to shrinking hair follicles, with men and women showing different balding patterns.

This study found that testosterone and 5α-dihydrotestosterone induced apoptosis in dermal papilla cells from nonbalding scalp regions, suggesting a high androgen stimulus can trigger cell death related to androgenetic alopecia.

Other common signs, not just the well-known immune cells around hair bulbs, are important for diagnosing hair loss from alopecia areata.

In this study, researchers reported that chronic UV exposure may contribute to androgenic alopecia progression by influencing hair cycle changes and exacerbating solar elastosis in the scalp.

This review discusses age-related changes in scalp skin and their potential effects on hair follicle aging, but reports no new clinical results, calling for further investigation.

This article discusses the challenges of diagnosing and managing hair disorders in patients with skin of color, especially conditions more prevalent in those of African descent, and provides no new clinical results.

This abstract is a website information page and provides no research findings, results, or conclusions.

This article reviews the evaluation and management of scarring and nonscarring alopecias, emphasizing the importance of early treatment to prevent permanent hair loss in scarring forms, but reports no new clinical results.

This review investigated various herbal remedies for hair loss and found potential benefits in promoting hair growth across several conditions like androgenetic alopecia and alopecia areata. However, the authors noted limitations in existing studies and recommended more robust trials to confirm efficacy.

Ashwagandha nanoparticles help hair grow by increasing a growth factor.

In this study, researchers observed that the YH complex, made from Astragalus membranaceus and Cinnamomum cassia, promoted hair regrowth and increased hair shaft thickness in mice, potentially through increased growth factors and Wnt/β-catenin signaling, suggesting its use for treating various forms of hair loss.

This article reviews diagnostic approaches for noncicatricial alopecias and reports no new results; it highlights the importance of scalp biopsy in some cases for accurate diagnosis.

In this study, the most common types of alopecia observed in patients visiting an oriental medicine clinic were androgenetic alopecia, alopecia areata, and telogen effluvium.

This article discusses androgenetic alopecia, emphasizing its prevalence, characteristics, and the importance of prompt diagnosis and treatment but reports no new clinical results.

This study diagnosed an 11-year-old girl with initial androgenetic alopecia and monilethrix after observing unique hair shaft abnormalities and skin conditions, unlike her affected parents.

This review synthesizes recent findings on the hair follicle stem cell niche and its complex interactions, exploring potential pathways for developing new hair growth therapies; it reports no new clinical results.

This review discusses diagnostic approaches for women with diffuse, nonscarring hair loss and reports no new clinical results.

This review discusses histologic findings in alopecia and emphasizes the importance of understanding normal follicular anatomy and cycles in transverse sections, without reporting new results.

This article discusses tissue-expansion augmented scalp reduction as a surgical option for cicatricial alopecia patients who are otherwise not candidates for traditional hair replacement techniques, but it reports no new clinical results.

This discussion reviews hair transplantation as a treatment for thinning, hairline restoration, or scar coverage in females, offering no new clinical findings.

This commentary discusses the mechanisms of progression and potential regrowth in androgenetic alopecia, indicating that the initiation of anagen in kenogen follicles is more critical for hair density improvement than reversing follicle miniaturization.

This paper identifies challenges in diagnosing alopecia variants, emphasizing the importance of pathologists understanding hair follicle histology, biopsy types, and collaborating with dermatologists to improve diagnostic accuracy.

This article previews a Journal of Investigative Dermatology quiz on diagnosing male androgenetic alopecia and offers no new research results.

This review found that three monthly PRP injections improved hair density in patients with androgenetic alopecia compared to placebo, but more rigorous studies are needed for broader dermatological applications.

This source summarizes discussions by an advisory board of twelve experts on hair loss, focusing on heredity, aging, and environmental impacts, and emphasizing strategies that may slow alopecia.

In this study, a 38-year-old male with syphilis-related mixed pattern alopecia showed marked hair regrowth and resolution of postauricular lymphadenopathy after treatment with benzathine penicillin, suggesting that lymph node and hair examinations, along with trichoscopy, can aid in the diagnosis of alopecia syphilitica.

This study found that trichoscopy criteria can distinguish female androgenic alopecia from chronic telogen effluvium, with specific features achieving 98% diagnostic specificity.

This review discusses the influence of menopausal status on hair parameters in women without alopecia, finding significant differences in hair growth rate, percentage anagen, and hair diameter distributions, particularly in the frontal scalp.

This article discusses hair shedding in women and does not offer new research results; it highlights the need for objective criteria to define excessive hair shedding.

This review focuses on the various skin symptoms associated with COVID-19 but reports no new clinical findings.