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This study found evidence that polythelia pilosa, previously excluded from classification, should be reintroduced as it marks true aberrant mammary structures in men and hirsute women.

This study found that a new 12-point scale provided a more precise measurement system for evaluating hair damage and improvement after hair care product use compared to a 5-point scale.

Isolated patchy heterochromia with pili annulati can occur without other health issues.

This study proposes a new mathematical model, the Harmonic Mean equation, for precisely quantifying nuclear pleomorphism in breast cancer grading, showing high performance with accuracy, recall, specificity, precision, and F1-score metrics.

This study reports that flaky skin mice exhibit skin and nail features that closely resemble human psoriasis vulgaris, suggesting they may serve as a natural model for this condition.

In this study, researchers propose that different vertebrate skin appendages, such as hair, feathers, and scales, evolved in parallel from a shared ancestral cell structure associated with teeth, dating back approximately 420 million years ago.

This review explores theories on the evolution of hair from synapsid scales and glands, proposing mechanisms supported by comparative studies, but reports no new experimental findings.

This study identified a new S100 fused-type protein, scaffoldin, in reptiles and birds and suggests that SFTP-positive epithelia serve as scaffolds for the growth of various skin appendages, indicating a common evolutionary origin.

This study used atomic force microscopy to identify significant morphological differences in hair from patients with lichen planopilaris compared to healthy controls, noting more scratches, uneven edges, and pitted scales in affected hair, which may aid future research on the condition.

In this study, researchers developed a mathematical model of outer hair cell hair bundles that replicates experimental responses to mechanical stimuli, providing insights into the stimulus-dependent adaptation mechanisms and the functional significance of their three-row stereocilia configuration in mammalian hearing.

This study found that hair follicles across mouse skin form a heterogeneous regenerative field, with distinct cycling dynamics influenced by the balance of activator and inhibitor signals, which could inform other organ regeneration research.

Capitate trichomes have more endoplasmic reticulum and vacuoles, while peltate trichomes have more plastids and larger subcuticular spaces.

This study suggests that dermal adipocytes play a significant role in skin aging, particularly through the process of adipocyte-myofibroblast transition, highlighting them as potential targets to combat aging in chronically photo-damaged skin.

This study found that ATP synthases and the mitochondrial gene COX2 play a key role in determining the size of skin appendages in hedgehogs and mice by influencing energy metabolism and cell proliferation.

In this study, researchers discussed how specific protein interactions in reptile skin allow for the development of protective structures like scales and scutes, which facilitated reptiles' adaptation to terrestrial environments.

This study found that a new 3D image analysis method from SEM images enables quick and accurate measurement of cuticle scale heights in hair fibers.

This study describes a newly identified mite species, Demodex zalophi, found on captive sea lions and highlights its unique traits, including being the first of its kind described in marine mammals.

In this review, researchers examined the molecular diversity and expression patterns of major skin appendage proteins, like keratins and EDC proteins, in tetrapods, highlighting recent findings in reptiles and birds and identifying knowledge gaps for future research.

The document concludes that dermatology training and grading scales need to better represent dark-skinned individuals to improve diagnosis and assessment of skin conditions.

This review provides an overview of the molecular evolution of corneous beta-proteins in reptiles and birds, highlighting their distinct genetic origin and role in epidermal structures, but reports no new results.

This study investigated the skin of 12 Baikal seals and identified two main skin pathologies potentially linked to global warming and changes in Lake Baikal's ice regime, including koilocytosis and inflammation associated with a possible viral pathogen.

This study describes how feather pigmentation in birds is regulated by melanocyte distribution, differentiation, and patterned agouti expression, contributing to diverse and adaptive color patterns.

This study describes unique anatomical characteristics of the skin and hair structures in the silver marmoset, including features such as thin epidermis, specialized nerve end-organs, and distinctive gland compositions.

This study found that hair follicles in mouse skin use common activator/inhibitor signals to maintain cyclical hair growth across different regions, with varying dynamics influenced by distinct anatomical domains.

This study found that distinct hair fiber structures among blue fox, mink, and otter rabbit can be used to identify and differentiate these fur types.

Crickets have genetically controlled hair plates that help them sense and move their antennae.

This study examined the morphological features of buffalo lips, finding that their structure includes distinct layers of skin, muscle, connective tissue, and glands.

Terrestrial vertebrates have balanced keratin gene clusters, unlike teleost fish.