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This review discusses primary neutrophilic cicatricial alopecias, their clinical and histological characteristics, and the importance of early therapeutic intervention to prevent scarring alopecia, reporting no new clinical results.

This review highlights that light and laser therapies, such as the 1064-nm Nd:YAG and 810-nm diode lasers, may offer significant improvement for acne keloidalis nuchae with minimal side effects, though larger trials are needed.

This research reports a new autosomal recessive mutation in mice, 'lanceolate hair', causing generalized alopecia and hair shaft abnormalities, which may serve as a model for Netherton's syndrome in humans.

Trichorrhexis nodosa causes hair to break easily, often affecting young to middle-aged black women.

Human nails contain both skin and hair keratins, each needing different extraction methods.

This study revealed the complex three-dimensional innervation of touch domes in cat forepaw skin, highlighting the extensive branching and unmyelinated endings associated with Merkel cell–axon complexes.

This research suggests that hair keratins evolved from claw keratins in a hairless ancestor, with Hoxc13 controlling their expression in tetrapods, evidenced by the knockout of Hoxc13 hindering claw formation in Xenopus tropicalis frogs.

This report describes two patients with ichthyosis linearis circumflexa exhibiting symptoms resembling Netherton's disease, noting multiple hair shaft defects and discussing a possible connection to aminoaciduria.

This study demonstrates that keratin K2 is crucial for proper keratinocyte structure and function in specific mouse skin areas, and its deficiency leads to cellular aggregates and skin abnormalities.

This study identified key cells and pathways needed for the development of touch receptor patterns in mouse skin, notably that certain keratinocytes are crucial for innervation patterns, while Merkel cells and BMP signaling have distinct roles.

This review discusses the molecular and functional aspects of the nude gene in skin biology, providing insights into its role and evolutionary development, but reports no new results.

This study found that loss-of-function mutations in the HOXC13 gene cause autosomal-recessive pure hair and nail ectodermal dysplasia, emphasizing its role in hair and nail development.

This study provides evidence for K1 and K10 derivatives' presence in the inner root sheath and hair cuticle, suggesting that these hair follicle parts may follow familiar keratinization principles.

This study identifies KLK14 as a significant factor contributing to hair defects and skin inflammation in a mouse model of Netherton syndrome.

This review explores the role of Foxn1 in mammalian skin biology, discussing its influence on hair follicle function and the potential for further research to enhance understanding of epithelial differentiation.

This study found that specific human hair keratins are differentially expressed in the hair follicle, suggesting a shared pathway of epithelial differentiation between hair cortex and nail plate cells.

This abstract lists affiliations and states no financial interests but provides no research findings to summarize.

This study suggests that hairlessness in nude mice may be due to insufficient expression of phospholipase C-δ1, a molecule essential for normal hair development downstream of the Foxn1 gene.

This case report describes two patients with a likely new type of pachyonychia, characterized by nail thickening and severe generalized hypotrichosis, possibly linked to a mutation in a hard keratin.

This study found strong evidence linking a keratin gene anomaly to pachyonychia congenita, supporting its role in affecting skin, nails, hair, and mucosa.

The document explains what healthy skin, nails, and hair look like on an ultrasound.

In this study, the researchers identified a third keratin 6 gene in mice and developed a double knockout model that could aid in hair growth research.

This article reviews nail involvement in various skin diseases, such as psoriasis and lichen planus, and highlights characteristic changes but reports no new clinical findings.

This review examines the role of stem cells and their niches in continuously growing ectodermal organs like teeth, hair, and claws, providing insights from mouse models without presenting new research findings.

In this study, upper-bulge epidermal stem cells in mouse hair follicles were shown to play a role in forming tactile sensory units by creating an extracellular matrix that supports nerve interactions.

This study introduces the N-K Healing Series, an alternative geometric approach to medicine, claimed to restore tissue fully and eliminate pain without the traditional drawbacks, allegedly achieving results beyond mainstream medical treatments in simulated injury scenarios.

In this study, researchers identified the ventral matrix as the primary source of nail plate formation, while the dorsal portion is generated by the apical matrix.

This review discusses the role of connexin mutations in various human disorders, highlighting their impact on ectodermal epithelial phenotypes like hearing loss and skin abnormalities, but it presents no new clinical findings.

A new genetic mutation in the CAST gene may link PLACK syndrome to alopecia areata.

This case report describes a patient with Clouston syndrome who developed squamous cell carcinoma, highlighting the need for regular follow-up in patients with chronic paronychia that do not respond to conventional treatments.