[Translated article] Immediate-Onset Linear Effluvium Associated With High-Density Hair Transplantation: A Series of 28 Case / Efluvio en línea de aparición inmediata asociado a trasplante capilar de alta densidad: descripción de 28 casos

We describe 28 patients who experienced effluvium with previously unreported features shortly after hair transplant surgery. Notable features were as follows: a) a linear morphology; b) immediate onset (1-3 days); c) association with dense-pack grafting in areas of receding hairline at the temples (Mickey Mouse pattern); d) a progressive increase in the diameter of the hair loss line (wave-like pattern); e) in some cases, subsequent concentric linear effluvium on the crown (donut pattern); and f) other forms of previously unreported immediate-onset effluvium. The linear morphology could be the result of dense packing, which can cause perilesional hypoxia and loss of miniaturized hairs around the recipient area. Since linear hair loss can cause patient concern about graft failure, we recommend taking images of transplanted and nontransplanted areas immediately after surgery and warning patients in advance about these transient effects, which are fully reversed in 3 months (AU)

Describimos 28 pacientes que desarrollaron una forma de efluvio postrasplante capilar con características no descritas en la literatura: a) morfología lineal; b) aparición inmediata (1-3 días); c) asociación con ‘dense packing’ en entradas (‘signo de Mickey Mouse’); d) progresión del diámetro de la línea (patrón ‘wave-like’); e) posible adición posterior de efluvio lineal concéntrico a vértex (‘signo del Donut’), y f) además de otros efluvios tampoco publicados por su inmediatez de aparición. La morfología lineal podría ser el resultado de la alta densidad colocada en nuestros pacientes, provocando hipoxia perilesional y efluvio de las unidades foliculares miniaturizadas que rodean la zona receptora. Debido a que la línea alopécica provoca inseguridad a los pacientes sobre una posible no colocación de injertos, recomendamos iconografía postoperatoria inmediata demostrando unión de áreas trasplantada y no trasplantada, así como la explicación previa al paciente de este fenómeno transitorio y completamente reversible en 3 meses (AU)

Efluvio en línea de aparición inmediata asociado a trasplante capilar de alta densidad: descripción de 28 casos / Immediate-Onset Linear Effluvium Associated With High-Density Hair Transplantation: A Series of 28 Cases

Describimos 28 pacientes que desarrollaron una forma de efluvio postrasplante capilar con características no descritas en la literatura: a) morfología lineal; b) aparición inmediata (1-3 días); c) asociación con ‘dense packing’ en entradas (‘signo de Mickey Mouse’); d) progresión del diámetro de la línea (patrón ‘wave-like’); e) posible adición posterior de efluvio lineal concéntrico a vértex (‘signo del Donut’), y f) además de otros efluvios tampoco publicados por su inmediatez de aparición. La morfología lineal podría ser el resultado de la alta densidad colocada en nuestros pacientes, provocando hipoxia perilesional y efluvio de las unidades foliculares miniaturizadas que rodean la zona receptora. Debido a que la línea alopécica provoca inseguridad a los pacientes sobre una posible no colocación de injertos, recomendamos iconografía postoperatoria inmediata demostrando unión de áreas trasplantada y no trasplantada, así como la explicación previa al paciente de este fenómeno transitorio y completamente reversible en 3 meses (AU)

We describe 28 patients who experienced effluvium with previously unreported features shortly after hair transplant surgery. Notable features were as follows: a) a linear morphology; b) immediate onset (1-3 days); c) association with dense-pack grafting in areas of receding hairline at the temples (Mickey Mouse pattern); d) a progressive increase in the diameter of the hair loss line (wave-like pattern); e) in some cases, subsequent concentric linear effluvium on the crown (donut pattern); and f) other forms of previously unreported immediate-onset effluvium. The linear morphology could be the result of dense packing, which can cause perilesional hypoxia and loss of miniaturized hairs around the recipient area. Since linear hair loss can cause patient concern about graft failure, we recommend taking images of transplanted and nontransplanted areas immediately after surgery and warning patients in advance about these transient effects, which are fully reversed in 3 months (AU)

Immediate-Onset Linear Effluvium Associated With High-Density Hair Transplantation: A Series of 28 Cases. / Efluvio en línea de aparición inmediata asociado a trasplante capilar de alta densidad: descripción de 28 casos.

We describe 28 patients who experienced effluvium with previously unreported features shortly after hair transplant surgery. Notable features were as follows: a) a linear morphology; b) immediate onset (1-3 days); c) association with dense-pack grafting in areas of receding hairline at the temples (Mickey Mouse pattern); d) a progressive increase in the diameter of the hair loss line (wave-like pattern); e) in some cases, subsequent concentric linear effluvium on the crown (donut pattern); and f) other forms of previously unreported immediate-onset effluvium. The linear morphology could be the result of dense packing, which can cause perilesional hypoxia and loss of miniaturized hairs around the recipient area. Since linear hair loss can cause patient concern about graft failure, we recommend taking images of transplanted and nontransplanted areas immediately after surgery and warning patients in advance about these transient effects, which are fully reversed in 3 months.

Sun exposure, a relevant exposome factor in acne patients and how photoprotection can improve outcomes.

BACKGROUND: Acne pathophysiology includes a complex interaction among inflammatory mediators, hyperseborrhea, alteration of keratinization and follicular colonization by Propionibacterium acnes. AIMS: To describe the impact of the exposome on acne and how photoprotection can improve outcomes. METHODS: A narrative review of the literature was carried out; searches with Google Scholar and Pubmed from January 1992 to November 2022 were performed. The keywords used were "acne," "sunscreens," "photoprotection," "cosmetics," "cosmeceuticals," "pathogenesis," "etiology," "exposome," "sunlight," "stress," "lack of sleep," "diet," "postinflammatory hyperpigmentation," "pollution," "exposome," "ultraviolet radiation," and "visible light." RESULTS: Environmental factors such as solar radiation, air pollution, tobacco consumption, psychological stress, diverse microorganisms, nutrition, among others, can trigger or worsen acne. Solar radiation can temporarily improve lesions. However, it can induce proinflammatory and profibrotic responses, and produce post-inflammatory hyperpigmentation and/or post-inflammatory erythema. While photoprotection is widely recommended to acne patients, only four relevant studies were found. Sunscreens can significantly improve symptomatology or enhance treatment and can prevent post-inflammatory hyperpigmentation. Furthermore, they can provide camouflage and improve quality of life. Based on acne pathogenesis, optimal sunscreens should have emollient, antioxidant and sebum controlling properties. CONCLUSIONS: The exposome and solar radiation can trigger or worsen acne. UV light can induce post-inflammatory hyperpigmentation/erythema, and can initiate flares. The use of specifically formulated sunscreens could enhance adherence to topical or systemic therapy, camouflage lesions (tinted sunscreens), decrease inflammation, and reduce the incidence of post-inflammatory hyperpigmentation/erythema.

Adverse Hair Reactions to New Targeted Therapies for Cancer. / Reacciones capilares de las nuevas terapias diana dirigidas contra el cáncer.

The advent of immune targeted therapies for cancer has radically changed the treatment and prognosis of many cancers. These drugs are called targeted therapies because they target specific pathophysiological mechanisms of cancer. This paradigm shift in cancer treatment, however, has resulted in new adverse dermatologic effects involving both the skin and its appendages. In the case of hair, targeted drugs can cause immune alterations and changes in hair growth, color, and shape. Because most targeted therapies are new, there is no single document describing all these adverse effects. We performed an exhaustive review of the literature to characterize adverse hair effects associated with the use of targeted therapies.