Hair shaft disorders are characterized by congenital or acquired abnormalities of the hair shaft. The objective of this study was to review the literature regarding the prognosis and treatment options for hair shaft disorders. We used keywords in the search engines PubMed and Medline to identify all publications in English related to the prognosis and management of hair shaft disorders. Data were extracted from 96 articles that met search criteria. Findings were limited to case reports and small case series, as no studies were found. Disorders that improve in childhood include pili torti, trichorrhexis invaginata, woolly hair, and pili trianguli et canaliculi. Others, such as trichorrhexis nodosa, monilethrix, pili annulati, and pili bifurcati, improve with minoxidil. Oral retinoids have been found to improve hair abnormalities in trichorrhexis invaginata and monilethrix. There is no specific treatment for congenital hair shaft abnormalities. Gentle hair care is the mainstay of care for hair shaft disorders associated with fragility. Practices for gentle care include no brushing, backcombing, chemical products, tight braids, heat exposure, or mechanical grooming. Furthermore, any inherited or congenital disorder requires genetic counseling as part of management.
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http://dx.doi.org/10.1111/pde.12902 | DOI Listing |
Int J Mol Sci
February 2025
Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Quebec City, QC G1J 5B3, Canada.
Hair follicle stem cells, located in the bulge region of the outer root sheath, are multipotent epithelial stem cells capable of differentiating into epidermal, sebaceous gland, and hair shaft cells. Efficient culturing of these cells is crucial for advancements in dermatology, regenerative medicine, and skin model development. This investigation aimed to develop a protocol for isolating enriched bulge-derived epithelial cells from scalp specimens to produce tissue-engineered substitutes.
View Article and Find Full Text PDFActas Dermosifiliogr
March 2025
Departmento de Dermatología, Facultad de Medicina, Universidad de Chile, Santiago, Chile; Departamento de Dermatología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile; Instituto de Diagnóstico por Imágenes en Piel y Tejidos Blandos, Santiago, Chile.
Although invasive techniques such as scalp biopsies and non-invasive techniques such as trichoscopy are commonly used for the diagnosis and management of alopecia, the latter does not always provide enough information on the state of the disease. Currently, we have new non-invasive diagnostic methods to complement the clinical and trichoscopic findings of patients with alopecia; these are high-frequency ultrasound (HFU), ultra-high-frequency ultrasound (UHFU), reflectance confocal microscopy (RCM) and optical coherence tomography (OCT), which are capable of identifying structures under the surface of the scalp, while maintaining the ability to monitor hair shafts. This review describes the main features reported with each technique for the different types of alopecia-scarring and non-scarring-with the aim of identifying those parameters that may contribute to clarifying new pathophysiological findings, while adding information to the trichoscopic examination and improving diagnostic processes and monitoring.
View Article and Find Full Text PDFArch Dermatol Res
February 2025
Department of Dermatology, Xianyang Hospital, Yan'an University, Xianyang, China.
Objective: This study assesses the short-term therapeutic efficacy and safety of injectable platelet-rich fibrin (i-PRF) in managing androgenetic alopecia (AGA). AGA, a common genetic condition leading to hair loss, significantly affects the quality of life. Given the limited efficacy of existing treatments, there is an urgent need for novel therapeutic strategies.
View Article and Find Full Text PDFForensic Sci Res
March 2025
Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Sciences, Ministry of Justice, Shanghai, China.
The analysis of mitochondrial DNA (mtDNA) is suitable for fingernail/hair shaft samples in forensic science. A successful mtDNA forensic analysis depends on the quantity and quality of the mtDNA. The application of massively parallel sequence techniques to the analysis of mtDNA has the potential to improve the recovery of genetic information from difficult forensic specimens and to increase the discrimination potential of mtDNA by capturing and comparing full mtGenomes.
View Article and Find Full Text PDFAustralas J Dermatol
February 2025
Department of Dermatology, The Royal Children's Hospital, Melbourne, Australia.
Paediatric hypotrichosis is the clinical feature of paucity of hair arising congenitally or in early life with the presentation being that of the child whose hair is growing insufficiently. It is a hallmark finding of a diverse group of genodermatoses and sporadic disorders, presenting as either an isolated symptom or in association with syndromic features. Hypotrichoses are rare, with numerous possible differentials requiring a thorough clinical assessment, additional investigations for hair shaft abnormalities and occasionally genetic counselling to reach a diagnosis.
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