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Humans lost body hair relatively recently in evolution.

This study suggests that trichoscopic features, such as perifollicular erythema and cicatricial white patches, are independently associated with pruritus and the severity of frontal fibrosing alopecia.

This review discusses the relationship between gut microbiota and alopecia areata, and it does not report new clinical results.

This study found that androgenetic alopecia was the most common cause of frontal hairline recession in Egyptian female patients, supporting the use of trichoscopy as a noninvasive diagnostic tool.

This study observed that in chicken skin, large-scale differences in gene expression between feathered and scaly skin are controlled by enhancer-driven uniform expression, while small-scale differences within individual feathers are associated with chromatin looping.

This study observed that bacterial communities on scalp hair collected through non-invasive swabbing showed similar diversity and composition to those obtained by cutting or removing hair, suggesting that swabbing is an effective method for microbiome analysis on hair.

This study reviewed current scientific evidence on how scalp microbiome alterations may affect hair growth, citing connections to inflammatory and immune processes and suggesting potential for therapeutic targeting, though further studies are needed to confirm clinical applications.

This study examined Prunus mira populations in the Qinghai-Tibetan Plateau and found high genetic diversity and substantial phylogeographic structure, suggesting geographic isolation limits gene flow; the researchers propose conservation strategies to preserve genetic resources.

In this study, Tithonia diversifolia extract was found to improve certain digestive parameters in crossbred sheep but did not enhance growth performance, as the improvements in digestion did not translate into increased body weight or feed conversion.

This review reports that while deep learning shows promise in diagnosing scalp disorders from images, challenges remain with data quality and model interpretability, suggesting that integrating explainable AI techniques is crucial for building trust and facilitating clinical adoption.

A new computer tool quickly measures hair thickness differences in people with common types of hair loss.

This review outlines the various fibroblast subsets in the skin dermis, their origins, and their influence on epidermal stem cell behavior, highlighting the role of the local dermal niche in stem cell plasticity.

This study found that high-speed optical coherence tomography may be a promising non-invasive tool for analyzing human hair conditions.

This review discusses the use of trichoscopy in diagnosing and managing pediatric hair and scalp disorders and reports no new experimental findings.

In this study, trichoscopic features aiding differential diagnosis of alopecia in Korean patients were found to be similar to those in Caucasians, but pigment pattern frequencies differed due to racial characteristics.

This review covers trichoscopy's role in diagnosing scalp disorders, emphasizing its potential to improve clinical accuracy, but it reports no new clinical results.

This article reviews trichoscopic techniques for diagnosing common hair loss conditions and presents a revised algorithm for identifying specific features of cicatricial and noncicatricial alopecia, but reports no new clinical results.

Hair diameter diversity is a key sign for diagnosing and managing male pattern baldness.

This study found that thermal hair straightening in Asian women was associated with various signs of scalp and hair damage, including CCCA-like hair loss.

This review examines the use of dermoscopy for diagnosing common hair disorders and highlights its importance, but it does not report new clinical results.

In this study, trichoscopic examination revealed that variations in hair diameter were more common in certain types of alopecia affecting the frontal scalp, suggesting the importance of evaluating the entire scalp for accurate diagnoses, although limitations include a single center design and small sample size.

This review reveals that PCOS is consistently linked to gut microbiota dysbiosis, characterized by reduced microbial diversity and shifts in composition, which are associated with various PCOS phenotypes and may present opportunities for microbiota-targeted therapies addressing the disorder's underlying pathophysiological mechanisms.

In this study, researchers evaluated trichoscopy in diagnosing non-scarring alopecia and found diagnostic value in observing diverse hair diameters in androgenetic alopecia, black dots and broken hairs in alopecia areata, and empty follicles in telogen effluvium, supporting trichoscopy's utility in differentiating alopecia types.

This study observed that trichoscopic patterns, such as yellow dots and honey comb patterns, correlate with the severity of androgenetic alopecia in Indian patients, highlighting trichoscopy's diagnostic and prognostic value.

This review discusses the developmental origins and diversity of dermal fibroblasts, focusing on their roles in epidermal and hair follicle growth, but reports no clinical results.

In this study, researchers assessed the genetic diversity of 101 Ginkgo biloba individuals using EST-SSR markers and concluded that there is a high level of genetic diversity in Ginkgo populations, facilitating the construction of a core germplasm collection for breeding purposes.

This review discusses various strategies proposed to control COVID-19 and highlights challenges related to human and viral genetic variability but reports no new findings.

This study identified two distinct trichoscopic patterns in the mid-frontal scalp of patients with frontal fibrosing alopecia who also display clinical features of androgenetic alopecia.

This study used whole-genome resequencing to analyze genetic diversity and selection in 17 rabbit breeds, identifying genes linked to traits like coat color and body size, which could inform breeding and conservation efforts.

Experiments can shape how feathers grow and develop.