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In this study, researchers observed that keratoacanthoma exhibits dynamic follicular differentiation throughout its stages, with changes in specific keratin expressions, and regressed lesions showing epidermal rather than follicular characteristics.

This article reviews acne keloidalis in young black men, describes its clinical and histopathological characteristics, and highlights surgical therapy approaches despite the uncertain etiology of the condition.

In this study, a thoroughbred mare exhibited a unique case of alopecia areata with lymphocytic infiltration at both the bulbar and isthmic levels of hair follicles.

In this study, researchers reported that CD34 expression in the isthmic region of canine hair follicles suggests a potential stem cell compartment in this area.

This abstract discusses advancements in hair transplantation technology, highlighting the role of robotics and follicular unit extraction/grafting in achieving excellent clinical outcomes, with adjuvant treatments like platelet-rich plasma, lasers, and stem cells potentially improving the durability and appearance of results.

This letter argues that cicatricial pattern hair loss likely represents end-stage androgenetic alopecia and not a variant of lichen planopilaris, as previously suggested.

This study observed that inflammation in androgenetic alopecia samples was similar to alopecia areata controls, but infundibular and isthmic inflammation were significantly more common in androgenetic alopecia cases.

In this study, researchers observed that a hidden scalp condition could contribute to acne keloidalis nuchae and potentially other primary cicatricial alopecias, impacting their diagnosis and treatment.

This study reports that finasteride treatment in men with androgenetic alopecia appears to restore caspase and XIAP expression in hair follicles to levels similar to those in individuals without the condition.

This case report describes two brothers with an unusual, possibly treatment-resistant inflammatory variant of androgenic alopecia, featuring follicular isthmic lymphocytic inflammation and diffuse central scalp hair loss.

This study found that targeting both hormonal and immune pathways improved treatment outcomes in androgenetic alopecia patients with an under-recognized inflammatory component called PIILIF, which may contribute to treatment resistance.

Lichen planus pigmentosus and fibrosing frontal alopecia in Colombia are likely different stages of the same disease.

This study found that the Foxn1(-/-) nude phenotype significantly influences epithelial progeny in skin, with notable changes in stem cell niches not achievable in other models.

This study found that CD90+ stem cells with fibroblast-like morphology are present in the lower part of the anagen hair follicle in dogs.

This study examines the role of hair follicle stem cells in epidermal regeneration during skin soft tissue expansion, proposing a potential method for their cellular and molecular regulation.

This case report describes a novel instance of scarring alopecia with features of frontal fibrosing alopecia in a patient with systemic sclerosis, suggesting a potential link between the two conditions not previously reported.

This study found that Sox9 was variably expressed in most canine skin neoplasms, particularly in those originating from the hair follicle's bulge region, suggesting its potential as a stem cell marker.

This review discusses the etiology of moth-eaten alopecia patterns in lichen planopilaris and emphasizes the importance of early diagnosis and treatment to prevent permanent scarring, offering no new empirical findings.

This article explores the effects of DHT on hair follicle miniaturization and finasteride's role in preventing this process, without presenting new clinical data.

This study suggests that PDGFA and BMP2 play a role in the hair follicle cycle in cashmere goats, with PDGFA particularly involved in activating the growth phase.

The study concluded that a 'Swiss cheese' pattern in hair follicles is a useful sign for diagnosing alopecia areata.

The Nd:YAG laser is a successful and safe way to treat ingrown and pincer nails.

Some people may temporarily lose more hair in certain areas after a hair transplant.

Mycophenolate mofetil may improve symptoms and stop hair loss in Lichen planopilaris, but more research is needed.

In this study, researchers observed that loose anagen hair syndrome is an autosomal dominant disorder characterized by abnormal hair follicle structure and premature keratinization, possibly due to signaling and desmosomal component disturbances.

This study suggests that finasteride may affect hair follicle growth by altering the expression of caspases and XIAP, potentially regulating the anagen phase of hair growth.

This review discusses histologic findings in alopecia and emphasizes the importance of understanding normal follicular anatomy and cycles in transverse sections, without reporting new results.

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.

The document describes how to tell different types of non-scarring hair loss apart by looking at hair and scalp tissue under a microscope.

This review discusses the potential causes and treatments for frontal fibrosing alopecia but reports no new clinical findings, highlighting the need for further research to understand its pathogenesis and develop validated treatments.