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This case report describes a hair structure abnormality associated with iron deficiency anemia, which improved after iron supplementation ceased hair loss and corrected the hair shaft abnormality.

This review presents updated tables of mouse mutants with hair growth abnormalities to aid in understanding the molecular mechanisms of human hair disorders, but reports no new clinical results.

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

This review classifies mutant mice with hair abnormalities into six categories, providing an annotated table that serves as a reference for understanding the molecular controls of hair growth.

This study characterized hair from a patient with a ribosomopathy and identified distinct differences, including reduced hair thickness and lipid content, compared to family members.

This article presents five family cases of monilethrix and reports that neither vitamins nor desquamative ointments are effective treatments, although symptoms may spontaneously regress over time.

This study reported that hair microscopy can help diagnose rare pediatric neurological diseases, as specific hair characteristics were linked to conditions like giant axonal neuropathy, Griscelli syndrome, and Menkes disease.

Chemotherapy can cause significant hair thinning and changes in hair texture, while tamoxifen has a smaller effect.

This study found that activating the erbB-2 oncogene in transgenic mice led to severe skin abnormalities and fatal defects, indicating erbB-2's significant role in skin and hair follicle development.

This study found that human mesenchymal stem cells overexpressing JAM-A improved hair follicle structure and hair formation in mice by reducing abnormalities such as curved and zigzagged follicles.

This review discusses the role of hair microscopy in diagnosing alopecia, stating that while it excludes diagnoses related to hair breakage, it only confirms nonspecific short anagen in alopecia cases.

Childhood hair and scalp disorders can be managed with treatments like cortisone and corticosteroids.

This study found that in Jordanian children, tinea capitis, alopecia areata, and telogen effluvium were the most common causes of hair loss, with nutritional deficiencies such as iron and zinc deficiency also noted as significant factors.

This article describes the first documented case of acquired uncombable hair syndrome in a 39-year-old woman, contributing to the understanding of this rare condition.

This review discusses various pediatric hair loss conditions and treatments, highlighting the importance of a holistic approach and noting that no single treatment is universally effective.

This study reported that knocking out the HR gene in pigs using CRISPR/Cas9 led to hairless eyelids and abnormalities in the thymus and peripheral blood, suggesting pigs as a model for human HR-related hair disorders.

Mother and son diagnosed with a rare genetic hair loss condition with no effective treatment.

The document concludes that hair analysis is not good for assessing nutrition but can detect long-term heavy metal exposure.

This case study reports that selenium shampoo, bacterial infection with trichomycosis axillaris, and possibly strongyloides larvae may have contributed to acquired hair shaft abnormalities resembling trichorrhexis nodosa in two patients.

This article reviews the clinical and diagnostic features of hair shaft disorders, emphasizing the role of structured patient assessments and the avoidance of hair trauma, but reports no new results.

This study found that most hair shaft abnormalities can be accurately diagnosed using a handheld dermoscope in a clinical setting.

This study reports an abnormal onion-shaped swelling on the hair shafts of some Abyssinian cats, affecting the appearance of their coat, though skin and hair structures appear normal under the microscope.

Some cells may slow melanoma growth, a protein could affect skin pigmentation, a gene-silencing method might treat hair defects, skin bacteria changes likely result from eczema, and a defensin protein could help treat multiple sclerosis.

This abstract provides no results; it is a website notification about cookies and general access to JAMA content.

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.

This mini-review discusses human hair follicle development and summarizes genetic disorders linked to abnormalities in hair follicle morphogenesis, structure, or regeneration, but reports no new experimental results.

This report describes an eight-year-old girl with severe hair shaft abnormalities who showed significant improvement after a single session of adipose tissue–derived exosome therapy, highlighting its potential as an innovative treatment option and the need for further studies to confirm its efficacy and safety.

This study found that novel compound heterozygous mutations in the desmoplakin gene lead to hair shaft abnormalities and can result in lethal cardiomyopathy.

In this study, R-CSLM showed promise in evaluating hair shaft diseases by providing high-quality images of hair structures, although further development is necessary for follicle and perifollicular area analysis.