February 2026 in “British Journal of Dermatology” This study found that while tape-strip RNA sequencing effectively profiles surface-connected epithelial compartments of human hair follicles, deeper follicular programs require traditional biopsies, except in cases of alopecia areata, which enhances the technique's follicular reach in capturing inflammatory signatures.
31 citations
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August 2001 in “PubMed” This study found that the TrichoScan method detected significant increases in hair counts and cumulative hair thickness in men after finasteride treatment, suggesting its potential for monitoring hair treatment responses.
March 2021 in “CRC Press eBooks” This chapter reviews trichoscopic features of primary cicatricial alopecias, particularly lichen planopilaris and frontal fibrosing alopecia, and reports no new results.
November 2025 in “Nature Communications” This study used a 3D live imaging system to map cell dynamics in human hair follicles, revealing patterns of cell movement and division that help explain hair fiber extrusion during hair growth.
November 2019 in “Hair transplant forum international” This study found that the SketchAndCalc tablet application offers an easy, rapid, and accurate method for measuring recipient areas in hair restoration, particularly excelling in accuracy for long and narrow shapes.
January 2001 in “Biomedical Research” This study observed that PAD type III and trichohyalin are expressed earlier than their deiminated form during the first and second hair cycles in rat hair follicles, indicating a potential additional factor is involved in triggering deimination.
1 citations
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September 1997 in “PubMed” In this report, the authors suggest that for extensive baldness, the uniform density approach in hair restoration surgery is less noticeable, especially in situations like wind or exercise.
3 citations
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November 1992 in “The Journal of Dermatologic Surgery and Oncology” This study found that combining a large posterior Z-plasty with staged modified paramedian scalp reductions significantly minimized the "slot" defect scar following scalp reduction surgeries.
21 citations
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January 2010 in “International journal of trichology” This report on two Indian male siblings with monilethrix highlights trichoscopy's role in diagnosing this condition, which can be complicated by early-onset androgenetic alopecia.
26 citations
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September 2016 in “International Journal of Dermatology” This study aimed to identify trichoscopic features that help differentiate between tinea capitis and alopecia areata in children, enhancing diagnosis and treatment decisions visually and non-invasively.
42 citations
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October 2012 in “Dermatologic Clinics” This article reviews the use of trichoscopy for diagnosing common hair and scalp diseases and introduces a new classification for specific skin surface abnormalities, without presenting new clinical results.
12 citations
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June 2006 in “Anais Brasileiros de Dermatologia” This study reports that scalp biopsies in white adults usually have 16.5 hair follicles, primarily in the anagen phase, with male samples showing fewer follicular units but more fibrous tracts in certain areas.
February 2009 in “Journal of The American Academy of Dermatology” This study found that HLA-B*57 and HLA-Cw*06 were associated with increased risk of psoriasis vulgaris, while KIR2DL2 was more prevalent in controls, suggesting a protective effect.
January 2026 in “International Journal of Research and Innovation in Applied Science” This case report details a rare instance of malignant proliferating trichilemmal tumour in a 60-year-old male, emphasizing the significance of histochemical and immunohistochemical markers for accurate diagnosis and differentiation from squamous cell carcinoma.
December 2020 in “Journal of Face Aesthetics” This study found that trichoscopy, a non-invasive diagnostic method, may effectively differentiate between types of focal alopecia in the parietal area in adult women, indicating specific trichoscopic features for conditions like alopecia areata, discoid lupus erythematosus, and lichen planopilaris.
112 citations
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January 2004 in “The International journal of developmental biology” This study found that feather patterning is primarily self-organizing and dynamic, relying on both genetic and epigenetic controls, with implications for similar processes like fingerprints and pigmentation.
2 citations
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March 2014 in “Veterinary World” This study characterized the hair follicle patterns of Indian bison, Black buck, and Nilgai, providing valuable data to help identify these endangered species' skins, commonly targeted by poachers.
December 2025 in “Al-Azhar International Medical Journal /Al-Azhar International Medical Journal” This study compared the diagnostic effectiveness of Folliscope and Trichoscope in 100 men with androgenetic alopecia, concluding that using both methods enhances diagnostic accuracy by providing complementary insights—Trichoscope highlights patterns while Folliscope offers objective measurements.
December 2019 in “Journal of pediatrics & neonatology” This case report discusses the diagnosis and management of temporal triangular alopecia in a pediatric patient experiencing asymptomatic hair loss, emphasizing its nonprogressive nature and poor prognosis for regrowth.
5 citations
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August 2013 in “Facial plastic surgery clinics of North America” This article discusses managing extensive hair loss with limited transplant options and suggests a frontal forelock-type pattern is effective for both already bald men and younger patients at risk; it reports no new clinical results.
4 citations
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January 2020 in “Skin appendage disorders” This case report describes a unique presentation of frontal fibrosing alopecia characterized by a hair loss pattern that resembles the Greek letter upsilon, supported by trichoscopic and histological findings.
44 citations
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October 1990 in “Archives of Dermatological Research” The connective tissue around hair follicles changes structure throughout the hair cycle.
July 2023 in “Dermatology practical & conceptual” This study developed a support vector machine model using trichoscopic patterns to accurately classify androgenic alopecia severity, with an accuracy of 94.3% in training and 90.0% in test datasets.
5 citations
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March 2015 in “Indian Journal of Dermatology” This report describes a rare case of multiple trichofolliculomas on the face, which clinically resembled multiple trichoepitheliomas.
July 2025 in “Communications Biology” In this study, researchers used synchrotron X-ray imaging to examine rat vibrissa follicles, finding that despite variations in vibrissa length and follicle size, certain sensory structures remain consistent, suggesting specialized roles in sensory processing depending on the vibrissa type.
1 citations
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January 2017 in “International Journal of Dermoscopy” This study found that trichoscopic digital imaging is a safe and accurate method for assessing the donor area in patients undergoing hair transplantation, helping to plan graft utilization based on hair density and follicular unit measurements.
2 citations
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October 2023 in “Dermatology practical & conceptual” This systematic review evaluated 60 studies on trichoscopy in hair and scalp disorders, revealing gaps in accounting for variables like disease stage or hair texture, and underscoring a need for more comprehensive analyses to fully understand trichoscopic patterns.
February 2009 in “Journal of the American Academy of Dermatology” Transverse sections are better for non-scarring hair loss, vertical sections are better for lichen planopilaris, and either method works for other scarring hair loss types.
January 2021 in “Skin appendage disorders” This review discusses atypical presentations of Brauer nevus, particularly in occipital and mid-frontal areas, and reports a higher occurrence in males, with detection usually at birth.
125 citations
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May 2007 in “Journal of The American Academy of Dermatology” This study describes the development of the BASP classification system, providing a universal and systematic approach for classifying pattern hair loss in both men and women.