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Sparse hairs below frontal hairline can indicate early male balding.

This article discusses the condition telogen effluvium, a type of diffuse hair loss, in the context of potential post-COVID-19 pandemic occurrences, but reports no new research or clinical results.

This report describes cases of tinea capitis in women over 65, an age group where it is rare, highlighting the need for fungal culture in atypical scalp dermatoses to avoid diagnostic delays.

This study highlights the significance of SFRP2 expression in dermal papilla cells, noting its correlation with the inductive potential for hair growth, although its role may be more indicative than transformative.

Human hair follicles have their own thyroid hormone system.

This article discusses the potential for transplanting follicles from the occiput of the scalp in AGA patients, noting that these hairs tend to remain terminal and non-miniaturized for life.

This study generated a transcriptomic map of human hair follicle compartments, providing a database for identifying compartment-specific gene expression which may aid in developing targeted treatments for hair follicle disorders.

This article reviews current classifications of primary scalp alopecias into scarring and nonscarring types and notes that the causes of many are still unclear, calling for further investigation.

This study found that in male androgenetic alopecia, the contrast enhanced phototrichogram technique was superior in detecting changes in hair density and thickness compared to other methods.

Hair restoration can be permanent.

This case report describes a 5-year-old boy with a solitary patch of hair loss, indicating possible fungal involvement after initial antibiotic treatment was minimally effective.

In this study, among 800 Pakistani patients with Alopecia Areata, the most common location for hair loss was the scalp (89.9%), with significant associations between age and various dermoscopic features like black dots and exclamation mark hairs.

In this study of folliculitis decalvans, researchers found that compound follicular structures in scalp biopsies are primarily composed of terminal anagen follicles, surrounded by fibrosis and inflammatory cell infiltrate, which could enhance understanding of this condition.

In this study, pilomatricoma, a benign skin tumor from hair follicle matrix cells, is highlighted as an important consideration when diagnosing painless, firm subcutaneous nodules, with accurate diagnosis relying on histopathological examination.

This study observed morphological changes in scalp hair follicles of humans deprived of protein for 15 days, which suggests potential use in diagnosing protein-calorie malnutrition.

This case report describes a 22-year-old male with hair casts on scalp and body hair, associated with androgenetic alopecia, also affecting his sister as pseudonits.

This study identified histologic lesions and a defect in adhesion molecules causing hair loss in mice with the bal mutation, linked to a mutation in the desmoglein 3 gene.

This study suggests that the hairless gene encodes a nuclear factor important for hair follicle integrity, and its absence leads to hair follicle loss and defects in tissue development.

Cicatricial alopecia can progress to complete hair loss, making diagnosis and management difficult.

This study observed that white females with Ludwig I female pattern hair loss had higher hair density on the occipital scalp, whereas Asian females had thicker hair diameters in both frontal and occipital areas.

This study developed a method for extracting proteins from micro-sized human head hairs, facilitating proteomic analysis even with limited hair sample availability.

This study identified and described a new form of alopecia termed "macular alopecia," predominantly affecting young Hispanic/Latinx females, characterized by small macules on the scalp with a high rate (63%) of spontaneous resolution in about five months.

Toupees improved perceived attractiveness, especially by older people, but had little effect on perceived self-assurance and health.

This study found that hair follicle characteristics vary significantly across different body sites, with the forehead and calf showing the highest potential follicular reservoirs, challenging previous assumptions about skin appendage distribution.

This study developed a hair-on-a-chip model that supports the maturation of hair-follicle-like tissue under long-term culture conditions, suggesting its promise for studying hair regeneration and testing scalp-targeted therapies.

This chapter details the causes and diagnostic process of pediatric alopecia, including trichoscopic findings, but reports no new clinical results.