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This study found that trichocytic cytokeratins, typically found in hair, are also present in nails, filiform papillae of the tongue, and the epithelial reticulum of the thymus.

This study found that videodermoscopy can help diagnose nailbed psoriasis by revealing distinctive hyponychial capillary patterns, which correlated with disease severity and response to treatment.

This case report describes a 23-year-old male patient with nail discoloration that may be associated with COVID-19, suggesting possible microvascular damage.

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 study found that keratin expression patterns vary within nail unit structures, with the nail matrix uniquely expressing the acidic hair-type keratin Ha1.

This study found that while most mice lacking MK6a and MK6b genes died from tongue epithelium disintegration, about 25% survived and showed no hair or nail defects due to a newly discovered MK6hf gene.

This study suggests a regulatory model where HOXC13 activates Foxn1, affecting hair and nail differentiation, supported by similarities in Hoxc13(tm1Mrc) and Foxn1(nu) mice phenotypes and gene expression patterns.

More research is needed to understand how hair keratins work and their role in hair disorders.

This study found that T cytokeratins appear more gradually and with complex coexpression patterns in developing nail structures compared to the more abrupt transition in hair follicles.

This review discusses the skin side effects associated with targeted cancer therapies and reports no new clinical results; it emphasizes the need for empirical management based on expert opinion.

This study shows that keratin 2e exhibits distinct temporal and regional expression patterns in fetal epidermis, suggesting different regulatory and functional roles from other epidermal keratins.

This essay discusses the role of the nail in mammalian digit tip regeneration and explores whether nail stem cells are solely responsible for this regenerative ability, with no new results presented.

This case report describes a patient experiencing nail nonadherence due to sterile matrix scarring associated with valproic acid use, and suggests nail bed excision with sterile matrix grafting as a potential surgical solution.

This study suggests that onychopapilloma may originate from the nail bed rather than the nail matrix, with nail bed-related keratins and HK31 potentially serving as diagnostic markers.

This case report describes an unusual nail tumor termed "onycholemmal horn" in a 77-year-old woman, highlighting its distinct histopathological features and the importance of excisional biopsy for accurate diagnosis.

This study found that a newly identified gene, mK17n, may explain the lack of nail issues in mK17 null mice by compensating for mK17's function in the nail bed.

This study shows for the first time that onychomatricoma can recapitulate the entire nail unit with differentiation toward the nail bed and isthmus, identifying new histopathological and immunohistochemical features.

This study found that the mouse nail unit structurally resembles the human nail unit, indicating it could be useful for researching nail diseases and biology.

This study observed that PAI-2 is consistently expressed in differentiating cells of murine hair and nail, suggesting it may function as a marker of differentiation and possibly protect against premature cell death.

This case report highlights a rare instance of fingernail and toenail hyperpigmentation following the use of valproic acid, which resolved after discontinuation of the drug.

Different nail disorders are treated by targeting their specific causes and using appropriate medications or protective measures.

This study found that polycystic ovary syndrome was the most common cause of hirsutism among premenopausal Algerian women, affecting nearly 60% of participants.

This study reported that the concept of the onychodermis, defined by CD10 expression, is present in the developing nail organ and may play a role in nail plate formation.

Keratin 17 is important for hair and nail structure and affects pachyonychia congenita symptoms.

Stem cells in mouse nails are found in the nail matrix and may control nail growth.

Carbamazepine may cause reversible nail detachment.

A woman's nail separation was likely caused by poor blood flow, and a treatment for similar conditions might help.

A woman's hair loss was caused by her husband's testosterone gel and a diabetic man's nail disease led to bone infection, both treated successfully.

Adjusting the medication tacrolimus resolved a boy's red nail beds after a stem cell transplant.

The treatments for fungal nail infection, hair loss in men, benign nail tumor, and chemotherapy-associated nail bed inflammation are effective and safe.