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This paper reviews the diagnostic criteria, etiological factors, and treatment approaches for PCOS, highlighting the importance of considering metabolic issues such as insulin resistance and obesity, but reports no new findings.

This review discusses the use of 5α-reductase inhibitors, particularly finasteride, for treating conditions like benign prostatic hyperplasia, male baldness, and hirsutism, and reports no new clinical results.

This article discusses recent advancements in treatments for psoriasis, including new drug approvals and innovative therapeutic approaches, but reports no new clinical results.

This review discusses sex differences in immune response to respiratory viral infections, including SARS-CoV-2, and highlights that hormones like estrogen may provide females with better protection, but it reports no new results.

This review discusses nearly 70 patent applications for the treatment of androgenetic alopecia and other hair conditions, highlighting the mechanisms of action explored but reports no clinical results.

This study identified key lipid differences between black and white hair in individuals with premature greying, highlighting vitamin D3 as a potential target for further research in understanding this condition.

This article reviews various treatments for scalp psoriasis, emphasizing the effectiveness and long-term safety of combining potent corticosteroids with vitamin D3 analogues, but reports no new clinical results.

The conclusion is that effectively treating hair disorders is difficult due to the complex factors affecting hair growth and more research is needed to improve treatments.

This review discusses molecular signaling pathways and nutritional factors influencing feather growth and regeneration in poultry and offers no new results; the authors suggest these insights may guide strategies for producing superior plumage.

In this study, 33 overweight women with normal hormone levels but showing PCOS symptoms experienced substantial reductions in acne lesions and improvements in hirsutism and menstrual irregularities after 8 weeks of Tracnil™ treatment, with minimal adverse reactions reported.

This review discusses how environmental factors like lifestyle, nutrition, and vitamin deficiencies may influence autoimmune diseases such as MS, SLE, and AA, highlighting associations with vitamin D levels and dietary interventions, but notes a lack of conclusive evidence for their roles in disease pathogenesis.

This article reviews the multifaceted roles of vitamin D beyond bone health and notes its potential involvement in reducing risks of certain cancers and autoimmune diseases, but it presents no new clinical results.

This review discusses the skin's role in producing hormones and related substances, highlighting their potential in homeostasis and disease management, and reports no new clinical findings.

This review explores the complex endocrine functions of human skin and its role as a peripheral endocrine organ, but reports no new clinical results.

This review discusses the role of cytochrome P450 enzymes in skin metabolism and drug development for skin diseases, highlighting their importance and suggesting further research, but reports no new experimental findings.

This study found that transfecting keratinocytes with the 1α-OHase gene enhances local production of 1α,25-dihydroxyvitamin D3, suggesting a potential new therapy for skin conditions like psoriasis without causing hypercalcemia or resistance.

This study observed that smokers and alcohol consumers with androgenetic alopecia had significantly lower serum levels of antioxidant vitamins, and these habits may trigger earlier onset of alopecia in susceptible individuals.

This retrospective cross-section study found that in a cohort of Pica patients in Iraq, 92.4% were female, and many had low levels of ferritin, hemoglobin, and vitamin D, which may contribute to the disorder by causing psychological issues.

This study provides evidence-based recommendations for the off-label use of topical vitamin D in treating certain skin conditions, but highlights the need for higher quality studies for further validation.

This review discusses the molecular role of the vitamin D receptor in regulating various biological actions such as bone mineralization and reports no new clinical results, highlighting the complexity of vitamin D's function in multiple tissues.

This study found that a novel missense mutation in the vitamin D receptor caused hereditary 1,25-dihydroxyvitamin D-resistant rickets with alopecia by disrupting protein function, highlighting the importance of DNA binding in hair development.

This case report documents a female toddler with novel compound heterozygous mutations in the VDR gene causing hereditary 1,25-dihydroxyvitamin D-resistant rickets, expanding the known mutation spectrum for this disease.

This review reports that vitamin D plays an important role in hair follicle development, with a negative correlation observed between serum vitamin D levels and female pattern hair loss, suggesting further research is needed before recommending vitamin D as a treatment.

In this study, researchers found no significant difference in vitamin D levels between psoriasis patients and controls, suggesting no association between vitamin D deficiency and psoriasis.

This study found that sodium zinc dihydrolipoylhistidinate reduced chemotherapy-induced hair loss in rats, suggesting its potential as a treatment for this side effect.

This study found that patients with androgenetic alopecia had deficiencies in certain trace elements and vitamins, which were linked to distinct patterns of hair loss connected to androgen levels.

This review discusses various resveratrol derivative patents for therapeutic, nutraceutical, and cosmetic use, but reports no clinical results and notes that claims of improved efficacy lack trial evidence.

This review critically assesses current topical therapies for scalp psoriasis and reports no new clinical results; the authors highlight the need for controlled trials to evaluate treatment efficacy.

The document concludes that various topical medications are effective for skin conditions but often cause skin irritation as a side effect.

This review examines the role of retinoic acid synthesis in hair follicles and sebaceous glands, focusing on its localization and function during normal and disease states, but reports no new results.