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This chapter reviews classic regeneration models in planarian worms and amphibian limbs, focusing on the role of stem cells, and reports no new experimental results.

This article reviews advancements in understanding skin regeneration and suggests that bioengineering skin surrogates may soon enhance treatments for skin trauma, but it presents no new clinical findings.

This study highlights a case of a 12-day-old female with Bloch-Sulzberger Syndrome, underscoring the need for early diagnosis based on skin symptoms to manage potential complications in other organs effectively.

This article reviews various hair growth and hair loss treatments, noting limited new developments since FDA-approved drugs but highlights recent cosmetic surgery and potential cell-based therapies; it reports no original findings.

This narrative literature review examined how linking embryonic development with non-genetic skin anomalies can improve diagnostic accuracy, guide prenatal counseling, and enrich dermatology education by revealing specific vulnerabilities in skin morphogenesis and supporting advances in regenerative medicine.

This review integrates studies on mouse models and human clinical observations to highlight the role of immune cells in skin development and how their dysregulation leads to skin disorders, suggesting potential therapeutic pathways for skin regeneration.

In this review, the authors highlight the crucial role of mesenchymal stem cells in dermatologic therapies, noting their potential to enhance skin structure and appearance through regenerative mechanisms like inflammation induction, angiogenesis, and recruitment of tissue-specific progenitors.

This study found that mesotherapy combined with minoxidil for androgenetic alopecia shows promise with high patient satisfaction and manageable risks, though some uncommon side effects may occur.

This study found that in sheep, the microRNA oar-miR-377 regulates hair follicle development by targeting the SLC24A2 gene, and identified a genetic variation associated with wool quality, suggesting potential markers for breeding.

This review discusses the insights gained from single-cell RNA sequencing of fibroblasts in various cancers and wound healing, highlighting differences in gene expression and novel interactions.

This case study describes a 21-year-old male diagnosed with Becker's nevus, characterized by hyperpigmented and hypertrichotic lesions that developed over several years.

This report describes a case of Goltz syndrome in a 12-year-old Saudi girl, highlighting the variability in symptoms and the importance of documenting such rare syndromes.

This study found that canine hair follicle stem cells are located in the isthmus/bulge region of the hair follicle, surrounded by telocytes.

This review outlines the various fibroblast subsets in the skin dermis, their origins, and their influence on epidermal stem cell behavior, highlighting the role of the local dermal niche in stem cell plasticity.

This chapter outlines various methods for evaluating alopecia but observes that most have limitations hindering their clinical use, emphasizing the need for more precise and practical tools for assessing alopecia in patients.

This review discusses the interplay between signaling/transcription factor-mediated and epigenetic mechanisms in skin development and regeneration, highlighting the need for further exploration of epigenome reorganization in these processes.

Modern hair restoration techniques can effectively treat hair loss and provide natural-looking results.

This study found that activating Wnt/beta-catenin signaling in hair follicles is sufficient to induce adipocyte generation in the dermis, affecting both hair follicle stem cell activation and adipocyte differentiation.

This article discusses the latest trends in hair restoration surgery and reports no new clinical findings, highlighting the continued unsatisfactory nature of drug therapies for androgenetic alopecia.

This study found that mesenchymal stem cells mainly promote skin regeneration and delay aging through paracrine activity, releasing growth factors and cytokines that protect against oxidative stress and stimulate healing.

In this study, transplantation of hair follicle stem cells and nerve growth factor-modified stem cells significantly reduced amyloid deposition and tau hyperphosphorylation in an Alzheimer's disease rat model, suggesting potential as a treatment option.

Hair follicle stem cells and mitochondria are key for hair growth, and targeting their activity could lead to new hair loss treatments.

This review highlights the significance of animal fibers, examining the molecular mechanisms influencing hair follicle development and their impact on fiber quality and quantity, with a focus on studies involving Angora and cashmere goats.

In this study, the researchers reported the detailed anatomical structure of horse skin, including the composition and organization of the epidermis, dermis, and associated glands and follicles.

In this study, researchers observed that after mesenchymal cell division in mouse and chicken embryonic skin, elevated migration speed and persistence for 180 minutes contribute to mesenchymal dispersal and preferential recruitment to dermal condensates.

This study observed that benign skin tumors were more common than malignant ones, with squamous cell carcinoma being the most frequent type among malignant tumors.

This study found that the absence of Hif-p4h-2 in specific mouse skin cells disrupted hair follicle development, leading to hair loss due to irregular keratin formation and pathway signaling.

This study found that hair follicle stem cells, when transplanted in a rat model of ischaemic stroke, migrated to affected areas, expressed neuron-specific markers, and reduced infarct volume, suggesting potential therapeutic benefits.

New findings suggest targeting IL-23 could treat psoriasis, skin cells can adapt to new roles, direct conversion of skin cells to blood cells may aid cell therapy, removing certain tumor cells could boost cancer immunotherapy, and melanoma may have many tumorigenic cells, not just cancer stem cells.

Hair loss caused by genetics and hormones; more research needed for treatments.