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This case series describes seven distinct hair shaft disorders, highlighting the importance of accurate diagnosis since these conditions are often treated incorrectly as alopecias without improvement.

This report describes a case of two sisters with kinky, tangled hair diagnosed using trichoscopic and microscopic methods; they were treated with topical minoxidil.

This review discusses the genetic disorder, monilethrix, characterized by fragile, brittle hair and its inheritance patterns, and reports no new clinical results.

This educational activity reports no new research findings; it aims to help physicians assess and improve their clinical skills through self-evaluation and continued medical education.

Hair changes could indicate neurological diseases and help monitor treatment.

This review discusses skin-related toxicities associated with targeted cancer therapies and emphasizes the need for dermatologists to understand and manage these adverse effects, but reports no new experimental results.

This review examines recent advances in understanding the pathophysiology and molecular mechanisms of androgenetic alopecia, highlighting two major genetic risk loci, but does not report new clinical findings.

Some drugs can cause hair loss or increase hair growth, but these effects are usually reversible when the drug is stopped.

This article reviews the classification of hair shaft abnormalities, outlining their diagnostic features, but does not present new research findings.

This study identified a 69 bp deletion in the KRT75 gene as the cause of the frizzle feather trait in chickens, affecting feather curling.

This study found that a genetic variant in the EDAR gene leads to typical East Asian hair characteristics by increasing signaling output, as shown in transgenic mice experiments.

This article reviews drug-induced hair changes, highlighting that while many drugs are occasionally linked to hair loss, this connection has been conclusively established for only a few, and such hair loss is typically reversible.

These guidelines review the management of complications and specific forms of congenital ichthyosis and report no new results; they summarize expert and evidence-based recommendations for clinicians.

This review discusses current techniques for scalp reconstruction following oncologic surgery and reports no new clinical outcomes, emphasizing the importance of tailored approaches for satisfactory closure.

This study found that brain-derived neurotrophic factor (BDNF) inhibited hair shaft elongation and induced premature catagen development in cultured human hair follicles, partially through transforming growth factor β2.

This article reviews common hair growth abnormalities in children, emphasizing the importance of distinguishing normal development from potential signs of metabolic disorders and indicates no new clinical results.

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 review discusses low-level light therapy for androgenetic alopecia and female pattern hair loss, noting minimal clinical evidence on its efficacy and the need for more controlled studies.

This study found that Insig deficiency in the skin of mice causes cholesterol precursors to accumulate, leading to defective hair development and skin abnormalities, which were alleviated by simvastatin treatment.

This review discusses advances and challenges in skin tissue engineering, focusing on developing 3D constructs for functional skin substitutes, and reports no new clinical results.

This review explores the connection between psoriasis and hair loss, noting that both the disease and its treatments can contribute to alopecia, and reports no new clinical results.

This study suggests that chronic telogen effluvium may be due to a reduction in the variance of anagen duration, resulting in recurrent hair shedding with minimal long-term hair volume loss.

This article reviews how various drugs may cause hair loss, stimulate growth, or alter hair characteristics, but reports no new clinical results; drug-induced hair loss is typically reversible.

Most hair loss in children is caused by a few common conditions, and it's important to diagnose these properly and support the child's mental health.

In this study, inactivating the TAF4 subunit of transcription factor TFIID in mouse epidermis disrupted gene expression linked to skin and hair function, and increased tumor risk.

This case study found that a 7-year-old girl's crystalline cataract had sulfur-containing amino acids likely cystine, and was associated with abnormal hair conditions.

This review discusses the role of cholesterol homeostasis in hair follicle biology and its potential connections to various hair disorders, but it reports no new findings.

This study identified two distinct histological patterns in permanent alopecia following bone marrow transplantation, suggesting links to myeloablative chemotherapy and chronic graft-versus-host disease.

The review concludes that accurate diagnosis of different types of hair loss requires proper biopsy techniques and understanding the hair growth cycle and underlying causes.

This article reviews the structural similarities and common disorders of hair and nails, highlighting their joint involvement in congenital and acquired conditions, but it reports no new clinical results.