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This chapter provides an overview of 11 common hair and nail conditions in children with brown skin, utilizing clinical photographs and a question-and-answer format to discuss conditions such as alopecia areata, telogen effluvium, and nail lichen planus.

This study suggests that targeting mitophagy to regulate mitochondrial dysfunction and inhibit inflammasome activation could offer a novel therapeutic approach for alopecia areata.

This article discusses features, genetics, and diagnostic challenges of central centrifugal cicatricial alopecia in African American women but reports no new clinical results.

This review discusses fibrosing alopecia in a pattern distribution and highlights diagnostic features, but reports no new clinical results; the authors emphasize the value of trichoscopy and histology in diagnosis.

This study reported that applying a nanosilica-bromelain-curcumin complex improved wound healing and hair regrowth in mice with second-degree burns compared to no treatment.

The fermented mixture may help hair growth and has antioxidative benefits.

This article reviews various skin grafting techniques for treating large wounds, particularly in animals, but does not present new experimental data.

In this study, testosterone was found to increase the risk of arrhythmias in a rat heart model, while finasteride reduced this arrhythmogenic effect.

This study suggests that minoxidil sulfate and pinacidil do not activate K channel currents in hair follicles, indicating their hair growth effects may occur through other mechanisms like increased blood flow.

This study found that culturing hair follicles at the air-liquid interface enhanced hair growth and maintained an anagen-like morphology better than submerged cultures.

This source reviews the latest developments in hair transplantation for androgenetic alopecia, suggesting that while medical therapy alone remains unsatisfactory, surgical hair restoration is shown to be highly gratifying for male pattern hair loss.

17-β estradiol and prednisolone may speed up hair regrowth after chemotherapy.

This study observed that deleting PTEN in mouse facial motoneurons enhanced peripheral axon regeneration but also led to physiological changes and potential hyperplasia in older mice.

This study found that etifoxine pretreatment reduced neuroinflammation and improved cognitive function in LPS-induced neuroinflammation in mice, potentially through increased neurosteroid synthesis and reduced apoptosis.

This study demonstrated that steroidal carbamates 7–10 altered mRNA expression related to lipid metabolism in hamster flank organs and inhibited 5α-reductase activity without binding to the progesterone receptor.

This study observed that maize plants, including a root hairless mutant variety, did not exhibit typical root growth or compensatory foraging behavior under severe boron deficiency in soil, indicating atypical responses compared to other plants.

This study found that patients with androgenic alopecia had altered neuroactive steroid levels and depression symptoms after stopping finasteride treatment, suggesting lingering neuropsychiatric effects.

In this study, researchers found that substance P triggered premature catagen development and immune changes in human scalp hair follicles, providing a possible biological link between stress and hair loss conditions like telogen effluvium and alopecia areata.

This study provides evidence that psychoemotional stress inhibits hair growth in mice by affecting the brain-hair follicle axis, with specific neuropeptides and treatments modulating this effect.

This study found that substance P and calcitonin-gene-related peptide have different roles in regulating hair growth in mice, with substance P promoting anagen progression and calcitonin-gene-related peptide inhibiting it.

This review presents various trichoscopic findings for diagnosing alopecia areata but reports no new clinical results, emphasizing that no single marker is pathognomonic and multiple features should be considered together.

This study in mice demonstrated that stress or nerve growth factor injection increases sensory neuron activity related to skin innervation, suggesting a strong connection between stress perception and neurogenic skin inflammation.

This study observed that long-term recombinant interferon alpha-2b therapy was associated with considerable hair loss in some patients, indicated by a telogen effluvium pattern on trichograms.

This study found that foot shock stress prolonged the telogen stage and delayed anagen induction in the hair cycle of non-depilated mice, potentially through stress-induced actions of substance P.

This review discusses the roles of several neuropeptides in skin-immune interactions and inflammatory responses, reporting no new results and emphasizing the need for further study in conditions such as psoriasis and dermatitis.

This study describes a distinct pattern of trichoscopic features associated with chemotherapy-induced alopecia and how these features evolve through different phases of chemotherapy treatment.

This review discusses the phytoconstituents and biological properties of T. orientalis and T. occidentalis, but reports no new clinical results.

Stress may affect hair growth by influencing hair follicle development and could contribute to hair loss.

This study found that the alcohol extract of Vernonia anthelmintica may counteract stress-induced hair follicle growth inhibition in mice, potentially offering a new approach for treating stress-related hair loss.

This review discusses the association between emotional stress-related neuropeptides and the pathogenesis of alopecia areata, reporting no new experimental findings.