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This study observed that pigmented casts are present in various alopecia types but are not specific to any single diagnosis, with distinct morphological features noted in trichotillomania.

Temporal triangular alopecia is a lifelong condition with hairless patches on the side of the head that may be present from birth.

This article provides departmental contact information for Dr. Dirk M. Elston at the Geisinger Medical Center and reports no research findings.

This study concluded that combining vertical and transverse sections of scalp biopsy specimens improves diagnostic yield for certain hair disorders without increasing costs.

This study found that vertical sections of alopecia biopsy specimens had a higher concordance rate with the original combined diagnosis compared to transverse sections alone, although both methods have their pros and cons.

This study suggests that for single biopsy specimens, transverse sections may be preferable for diagnosing noncicatricial alopecia, while vertical sections may be better for suspected lichen planopilaris.

This study observed that triple horizontal scalp biopsies provided a more accurate diagnosis of female pattern hair loss in women than a single horizontal biopsy, especially for those with advanced hair loss.

This study observed that 2.5% of patients with mycosis fungoides or Szary syndrome experienced alopecia, predominantly within skin lesions, with scalp metastases from other cancers also potentially causing hair loss, highlighting the diagnostic value of trichoscopy in differentiating alopecia types.

This study conducted in a hair restoration clinic found that using the vertical scalp mobility method resulted in a significantly greater number of hairs available from the donor strip compared to the horizontal method, with an increase of approximately 970 hairs (P < .05).

This study found no evidence supporting the hypothesis that Aβ afferents sprout into the superficial laminas of the spinal cord after nerve injury in rats.

This correspondence highlights existing research on pattern hair loss, discussing findings about immune deposits, lymphocytic infiltration, and responses to treatment, and calls for future well-controlled studies.

This article discusses the phases and histological features of alopecia areata and reports no new clinical findings; the authors emphasize recognizing these phases for accurate diagnosis.

This report presents four cases highlighting diagnostic challenges between specific types of alopecia, comparing their clinical and histopathologic features without providing new research findings.

This article discusses the structure of hair follicles and their significance in evaluating hair disorders, but it does not report any new research findings.

This study observed that transverse sectioning of scalp biopsies may aid in diagnosing different types of alopecia by revealing distinct histopathological features like follicle miniaturization and specific inflammatory patterns.

This study found that the petroleum ether extract of Solanum nigrum may promote hair regrowth in testosterone-induced hair loss in rats, as indicated by increased follicle density and anagen/telogen ratio.

This review discusses the strong correlation between reflectance confocal microscopy images and horizontal histopathology in diagnosing skin tumors, highlighting the reliability of this non-invasive technique; no new clinical results are reported.

The researchers reported that pubic hair transplantation surgery may help improve self-esteem in women with pubic atrichosis or hypotrichosis by achieving natural and realistic-looking results.

This article reviews the historical development and advancements in hair transplant techniques, from punch grafting in the 1950s to the modern follicular unit extraction, and reports no new clinical results.

This review highlights that autologous platelet concentrates, particularly platelet-rich fibrin, have shown potential to enhance healing and outcomes in both dental and medical applications, including injury recovery and aesthetics.

In this study on Iranian patients with non-scarring alopecia, researchers found that androgenetic alopecia was the most common subtype, with perifollicular inflammation observed more in males. They reported that transverse sectioning is generally sufficient for diagnosis, but combining with vertical sectioning provides more comprehensive information.

This review discusses various methods for processing and separating human skin samples for research purposes, evaluating factors like processing time and cell viability, but reports no new experimental findings.

This study found that horizontally bisected donor hairs can be used to create finer hairlines, with about 46-47% growth reported in transplanted hair shafts and bulbs.

This study found that the transcription factor p63 is crucial for horizontal basal cell differentiation in the olfactory epithelium, suggesting a p63-dependent mechanism activates reserve stem cells after injury.

This study found that fullerene nanomaterials can significantly enhance hair growth and increase hair follicle numbers in both shaved and bald mouse models, as well as in cultured human skin sections.

This review highlights the roles of key transcription factors and signaling pathways in regulating olfactory epithelium regeneration, discussing recent advances in single-cell and spatial transcriptomics as well as organoid models to enhance understanding of olfactory regeneration mechanisms.

A scalp biopsy is essential for accurately diagnosing alopecia, with a 4-mm punch biopsy sectioned horizontally being the recommended technique according to this study.

This study reviewed scalp biopsies from African-American patients, identifying distinct features and diagnostic clues for scarring alopecia types such as traction alopecia and central centrifugal cicatricial alopecia.

This study found decreased hair density and altered follicular architecture in the balding frontal scalp of patients with androgenic alopecia, with increased vellus hairs noted.

This study found that serial vertical sectioning of scalp biopsies significantly increases the histological diagnostic yield for alopecias.