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This study found that induced COX-2 expression in adult transgenic mice led to hair follicle miniaturization and enlargement of sebaceous glands, and suggests that targeting the PGD2 pathway might reverse these effects.

This study found that glycosaminoglycan levels were higher in the occipital area of the hair shaft compared to the parietal area, with children showing higher levels than adults.

Hair is thinner near the scalp in acute hair shedding conditions.

This study reported that polarized dermoscopy was better for visualizing vascular patterns, scaling, and reticular pigmentation, while nonpolarized mode better documented features like black dots and tapered hair in various hair and scalp conditions.

This study found that the parietal/occipital hair density ratio decreases significantly only when baldness is visibly present, making it no better than the Hamilton/Norwood scale for assessing baldness severity.

This study developed a geometric framework for estimating safe donor harvesting in hair transplants, showing that individual hair characteristics like caliber and length significantly affect donor capacity.

This article provides contact information for Bruce A. Morgan and features no new research findings.

The study found that prolactin expressed in human scalp hair follicles acts as an autocrine modulator, inhibiting hair growth and promoting hair follicle regression, which may contribute to hair loss in hyper-prolactinemia patients.

This study analyzed changes in hair diameter and density with age in Caucasian women, highlighting variations in perception of hair amount over time.

This review discusses the use of trichoscopy in diagnosing and managing pediatric hair and scalp disorders and reports no new experimental findings.

In this mouse study, UVA and UVB exposure led to hair follicle miniaturization, graying, and prolonged hair cycle duration, associated with changes in stem cells and increased Wnt signaling activity.

This study outlines a method for isolating dermal papilla cells from human hair follicles, which may help overcome challenges in studying their role in hair growth.

This case report describes a patient with lichen nitidus whose lesions improved following treatment with oral astemizole and topical steroids, although spontaneous resolution remains a possibility.

This study found that trichoscopic quantitative parameters reliably indicate the severity of female pattern hair loss and complement the Sinclair scale by offering a more objective and reproducible grading system.

This study found that female pattern hair loss was present in 12.5% of PCOS patients examined, with most cases in younger women, highlighting early detection and management importance.

This abstract outlines the genetic and biological processes of hair growth, highlighting that various hair disorders can have significant medical, aesthetic, and psychological impacts, though specific research findings or results were not reported.

This study identified specific lncRNAs and mRNAs differentially expressed in miniaturized follicles compared to normal follicles in patients with androgenetic alopecia, with AL136131.3 potentially inhibiting hair growth and accelerating follicle transition to catagen through effects on glycolysis-related genes.

This study identified acute localized telogen effluvium as a potential cause of temporal hair loss following rhytidectomy.

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

In this study, severe diffuse hair loss in patients with systemic lupus erythematosus was associated with distinct clinical, dermoscopic, and histopathological features, which improved alongside treatment of the underlying condition.

This study identified acute localized telogen effluvium as a histopathologic mechanism for temporal hair loss following rhytidectomy.

This article discusses various hair diseases and emphasizes their significant impact despite affecting a small area, but does not report new clinical findings.

Hair health is influenced by genetics, aging, and environmental factors, with proper care needed to maintain it.

This study identified distinct clinical and dermatoscopic features to differentiate non-scarring patchy alopecia in SLE from alopecia areata, emphasizing the value of serological tests in diagnosis.

This study found that dermoscopy can identify distinctive features in canine pattern alopecia, such as hair shaft thinning and pigmentation patterns, which may aid in diagnosing this and potentially other skin disorders.

This study suggests that dermoscopy provides additional insights for diagnosing pattern alopecia in short coated dogs, beyond what is visible through standard dermatological examination.

This article reports on a family with six members diagnosed with monilethrix, highlighting varying degrees of alopecia linked to this rare hair shaft defect.

This study found that combining a GnRH agonist with a low-dose oral contraceptive was more effective in treating hirsutism than either agent alone and prevented hypoestrogenic side effects.

This article discusses the presentation of chemotherapy-induced anagen effluvium as either diffuse or patterned hair loss and reports no new clinical findings.

The authors concluded that trichoscopy is a valuable noninvasive tool for diagnosing and monitoring nonscarring alopecia, aiding in the identification of new hair signs in difficult cases.