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This study concluded that horizontal sections of scalp biopsy specimens provide more diagnostic information for male pattern androgenetic alopecia than vertical sections and can predict hair regrowth potential following topical minoxidil therapy.

This study reports that horizontal sections of scalp biopsies improve the diagnosis of alopecia areata, especially when characteristic inflammatory infiltrates are missing.

This study reported that using photomnemonics facilitated accurate histopathologic interpretation of horizontal scalp sections in distinguishing between nonscarring and scarring alopecias by dermatopathologists and residents in a validation test.

This study found that transverse sections of scalp biopsies, particularly looking at the anagen:non-anagen hair ratio and presence of pigment casts, effectively distinguish alopecia areata from androgenetic alopecia.

This commentary reviews the evidence for microinflammation's role in pattern hair loss and suggests that further studies with age- and sex-matched controls are needed to substantiate the findings.

This study found that scalp involvement in dermatomyositis consistently shows a nonscarring pattern with chronic telogen effluvium, featuring telangiectasia and mucin deposition as universal histologic markers.

This study found that horizontal sections of scalp biopsies in patients with Central Centrifugal Cicatricial Alopecia often reveal follicular miniaturization, inflammation, and scarring, which can guide personalized treatment.

This case study reported on a 72-year-old woman initially diagnosed with inflammatory alopecia, later identified as having angiosarcoma of the scalp, revealing the importance of considering unexpected malignancies during evaluation of suspected inflammatory alopecia cases.

This study found that transverse sections of scalp biopsies showing lower anagen:non-anagen hair ratios and presence of pigment casts help differentiate alopecia areata from androgenetic alopecia.

This study found that the Elastic Verhoeff–Van Gieson stain may help differentiate between follicular streamers and scars in cicatricial and noncicatricial alopecias by highlighting differences in the elastic fiber network on horizontal scalp biopsy sections.

Finasteride 1mg helps reverse hair miniaturization in men and postmenopausal women.

This study concluded that including intermediate hairs or using relative shaft diameter methods can significantly improve the sensitivity of trichograms in diagnosing female androgenetic alopecia, aligning better with histopathology results.

This article critically assesses literature favoring horizontal over vertical sections for diagnosing scalp diseases and concludes that a qualitative, vertical approach improves diagnostic precision for alopecias.

In this study, four women with chronic telogen effluvium experienced fluctuating hair shedding without visible reduction in hair density or follicular miniaturization over at least 7 years.

This study reported that dilated follicular infundibula are a highly useful histopathologic criterion for diagnosing alopecia areata, particularly during its recovery stage.

This review discusses the classification and diagnosis of primary scalp alopecia, focusing on scarring and non-scarring types, and reports no new clinical results; it emphasizes simplified diagnostic pathways and tissue processing techniques.

Examining scalp biopsies in different ways helps better diagnose hair loss types.

The document explains how hair follicles develop, their structure, and how they grow.

This article reviews the differences between scarring and non-scarring alopecias and describes diagnostic methods but reports no new clinical findings.

This study introduces the "HoVert" technique, which generates both vertical and horizontal sections from a single biopsy to effectively differentiate lichen planopilaris from discoid lupus erythematosus in alopecia cases.

Understanding hair follicle structure is key for treating hair disorders and could help develop new treatments.

Hair casts are often mistaken for head lice, scalp pain in hair loss is linked to certain nerve factors, eyelash growth treatment is safe and effective, and nail shedding in children may follow hand-foot-mouth disease.

This study found that hair diameter varies significantly within the occipital safe donor area, with thicker hair in the upper sections and thinner hair in the lower sections.

This study suggests that using ex vivo dermatoscopy can improve the accuracy of scalp biopsy processing by correctly guiding tissue bisection and potentially reducing laboratory costs and turnaround time.

This study examined hair follicle arrangement to identify a suspected wild boar involved in a dynamite blast, concluding based on circumstantial evidence that it may have belonged to a wild boar.

This study describes the anatomy of arrector pili muscles in scalp hair follicular units, proposing a model where a single muscle structure is shared by all follicles within a unit.

This study describes how arrector pili muscles form a single muscular structure shared by all hair follicles within a follicular unit at the isthmus level in scalp skin.

This review discusses the basic principles of hair pathology and findings in common types of alopecia but reports no new research results.

This study found that by using an automated system to analyze skin histology, 108 structural features were significantly affected by age, and it identified four new aging biomarkers and notable sex-based differences in skin aging.

The study concluded that a 'Swiss cheese' pattern in hair follicles is a useful sign for diagnosing alopecia areata.