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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.

This study compared trichostasis spinulosa with keratosis pilaris and eruptive vellus hair cysts, finding differences in lesion distribution and microscopic appearance.

This case study highlights how trichoscopy helped differentiate between diffuse alopecia areata and trichotillomania in an 11-year-old girl, demonstrating its importance in distinguishing hair disorders with similar presentations.

This case report describes a young girl with trichothiodystrophy and suggests the need for early diagnosis and multidisciplinary interventions for her educational challenges.

This case report details two siblings with trichothiodystrophy, identifying reduced hair sulfur content as essential for diagnosis despite varied symptoms complicating recognition.

This study found that trichoscopy can diagnose genetic hair shaft abnormalities without plucking or cutting hair, by visualizing characteristic features in a single session.

This review discusses how trichoscopy, a hair and scalp examination method, helps in diagnosing various hair diseases by identifying specific structural features but provides no new clinical findings.

This study found that trichorrhexis nodosa, a common cause of unexplained hair loss, is primarily caused by trauma rather than a metabolic defect.

Trichotillomania is a condition where people repeatedly pull out their hair, which can be triggered by stress and has various physical signs.

This study found that Trichoscope can effectively reveal clinical features of alopecia areata and androgenic alopecia, making it a useful tool for diagnosis and monitoring.

This review discusses the diagnostic and treatment challenges of trichotillomania and emphasizes the need for better-designed studies to optimize treatment approaches.

This study explains that while trichothiodystrophy and xeroderma pigmentosum share genetic defects, TTD patients primarily exhibit issues in transcription initiation, not the increased skin cancer risk seen in XP.

This article provides a diagnostic guide for clinicians to differentiate between various hair shaft disorders by using a structured question-by-question approach but does not report new clinical findings.

In this case report, a 24-year-old male with acquired distal trichorrhexis nodosa showed significant improvement after avoiding harmful hair treatments and using a repair shampoo alongside biotin and zinc supplements.

This article discusses the uses and techniques of trichoscopy for hair and scalp disorders and reports no new clinical results.

This article presents a case of trichostasis spinulosa, a common but often unrecognized disorder, diagnosed through dermoscopic examination of black macules revealing bundled vellus hairs, with the patient declining treatment.

This review discusses the importance of physical examinations in trichology, emphasizing their role in diagnosing conditions like alopecia and hair dystrophies, and reports no new clinical results.

This study proposed that the tiger tail phenomenon in trichothiodystrophy hair is caused by regular undulations of hair fibers, altering the optical properties seen under polarized light.

In this study, researchers found that trichothiodystrophy hair brittleness is linked to abnormalities in sulfur content and structural organization, making it prone to breakage.

This study found that dermoscopy improves clinical diagnosis accuracy for trichostasis spinulosa and proposes a new dermoscopic classification with implications for treatment outcomes.

This study examined children with trichotillomania using a set of specific questions to better understand the condition and aid clinicians who may be unfamiliar with it.

This review summarizes fundamental concepts and recent advancements in hair follicle biology, including insights from mouse models into broader molecular and cellular processes relevant to regeneration and development.

This review discusses keratin disorders and potential RNA interference therapeutics, reporting no new clinical findings but highlighting the promise of siRNA for future treatments.

This study identified a cluster of genes on chromosome 17 related to hair keratin-associated proteins, including 37 genes forming seven multigene families, localized in the hair shaft's upper cortex.

This study identified novel compound heterozygous mutations in the DSG4 gene in a Japanese patient with congenital hypotrichosis, suggesting overlap between localized autosomal recessive hypotrichosis and monilethrix.

This study revealed that human keratin-associated protein genes are expressed in specific patterns in hair fiber regions and vary in size, with some variations distinct across different populations.

This study found that severe folliculitis decalvans was associated with its onset before age 25 and the presence of pustules, while tetracyclines and clindamycin plus rifampicin were effective treatments.

This study identified 16 novel high sulfur KAP genes and two KAP pseudogenes on chromosome 21q23, showing expression in a specific region of the hair fiber cuticle.

This report highlights two cases where patchy alopecia developed after mesotherapy for androgenetic alopecia, indicating potential risks associated with this treatment.