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This article reviews the impact of nutritional deficiencies on hair health, detailing how they can cause structural abnormalities, pigmentation changes, or hair loss; it presents no new clinical findings.

This study found that unilateral neutron irradiation in pigs significantly decreased the uptake of radioactive zinc in blood, impaired growth, and led to decreased organ weights and hair pigmentation changes on the irradiated side.

In this study, researchers at the Hospital Militar Universitario “Dr. Carlos Arvelo” found that among children under five with severe malnutrition, skin pigmentation changes and extreme thinness were the most common signs.

This case report describes a 68-year-old woman diagnosed with chronic cutaneous lupus, characterized by irregular plaques with distinct pigmentation and scarring alopecia, confirmed through histopathology revealing specific skin changes.

In a mouse model study, researchers observed that the absence of MCPIP1 in myeloid cells decreased susceptibility to chemically induced skin papillomas but caused significant hair loss and skin pigmentation changes, suggesting a role for MCPIP1 in skin carcinogenesis and follicle integrity.

This source highlights that arsenic exposure through contaminated groundwater is a significant global health risk, leading to skin and hair conditions such as pigmentation changes, skin irritation, alopecia, and can eventually result in skin cancer.

This study observed that 21.6% of oncology patients experienced dermatological side effects from anti-cancer drugs, with hair loss and skin pigmentation changes being the most common.

This study suggests that gamma-ray irradiation affects hair follicle density, structure, and pigmentation in mice, with some changes observed in later hair cycles.

This case report describes the unexpected hair repigmentation surrounding a scalp tumor in a 74-year-old man, suggesting a potential link between the carcinoma and changes in hair pigmentation.

The document concludes that individualized treatments for hair issues are effective, certain hair changes can indicate neurocutaneous diseases, specific lotions improve skin health, laser hair removal works but needs more study on long-term effects, men's cosmetics are diverse, peeling is effective but can have side effects, and facial pigmentation is often due to overactive skin cells.

This case report describes a 30-year-old man's scleroderma-like skin changes and segmental thrombosis in the left leg, along with elevated blood sugar and advised weight management and limb care.

This study describes changes in scalp hair color, including rare instances of repigmentation, following volumetric modulated arc therapy for skin cancer; this potential side effect may warrant discussion during informed consent.

This study found that hyperpigmented skin changes resembling Schamberg’s purpura occur in areas affected by CRPS and can also appear on mirror-image locations of unaffected limbs, potentially improving with the condition's treatment.

Thyroid-stimulating hormone affects hair follicles but doesn't change hair growth or color.

This study found that hair luster increased with higher fiber pigmentation and application of specific cosmetic oils and styling resins, while micronized ZnO and synthetic sebum dulled hair.

This study suggests that melatonin plays a role in hair follicle function by modulating growth and pigmentation, and it may act as a protective agent in active hair growth phases.

This study observed that specific trichoscopic features like white peripilar signs, scalp pigmentation, and focal atrichia are associated with advanced female pattern hair loss in Fitzpatrick skin type III patients.

This study found that transfecting alpaca melanocytes with miR-5110 altered gene expression related to pigmentation, specifically identifying pathways like MAPK and Wnt as involved in melanogenesis regulation, providing insights into miR-5110's role in pigmentation processes.

This review discusses the hormonal impact on hair growth and the relationship between endocrine disorders and hair changes, reporting no new clinical results.

This study found that applying 0.005% latanoprost topically to eyelashes significantly increased their length and darkened their color in healthy volunteers over three months, without causing any side effects or changes in intraocular pressure compared to a placebo.

This case series describes five patients with rare facial lichen planopilaris, detailing the clinical presentation and treatment of their pigmentary changes and scarring alopecia.

In this case series, researchers observed a rare presentation of lichen planopilaris confined to the face in six patients, with dermoscopic and histopathological profiles indicating scarring alopecia and pigment changes, and suggested that shaving and mustard oil use might trigger the condition.

This source reviews advancements in microneedle-based cosmeceutical delivery, discussing new technologies and highlighting a burgeoning area of research involving microneedling combined with stem cell delivery for anti-aging, without finding measurable changes in skin barrier function or appearance during the study period.

This review discusses various biologics for hair aging but reports no agent capable of reversing the natural aging process of hair.

This article explains that skin microneedling promotes skin regeneration by creating microinjuries, which stimulate collagen and elastin production, making it effective for treating various skin issues with high effectiveness, limited side effects, and a short recovery time.

This study found that low-level laser treatment may promote hair regrowth in mice by activating the Wnt10b/ß-catenin pathway and inducing the anagen phase of hair follicles.

This study highlights the critical role of mitochondria in skin aging and wound repair, suggesting that targeted interventions such as antioxidants, NAD⁺ boosters, and NRF2-based therapies may enhance mitochondrial function and improve cutaneous health.

This report describes a patient experiencing hair repigmentation linked to adalimumab therapy, a TNF inhibitor, a phenomenon not previously associated with this class of drugs.

This article discusses various pruritic dermatoses that can occur during pregnancy, emphasizing the importance of physician skill in diagnosing and treating these conditions; it reports no new findings.

In this study, researchers identified specific clinical and dermoscopic features of chronic radiation-induced dermatitis in 32 head and neck cancer patients treated with radiotherapy, and determined age, gender, and prior surgery as independent risk factors for developing this skin toxicity.