Physiology and Medical Treatments for Alopecia.

Androgenetic alopecia (AGA) is the most common hair loss disorder in men and women. The characteristic and reproducible balding pattern in AGA negatively affects self-image and the external perceptions of the balding patient. The phenotypical changes are driven by dihydrotestosterone (DHT) and its precursor testosterone. DHT induces follicle miniaturization and hair cycle changes until resulting hairs no longer extrude through the skin surface. AGA is inherited in a polygenetic pattern and is susceptible to epigenetic and environmental factors. Currently, minoxidil, finasteride, and photolaser therapy are the only Food and Drug Administration-approved medical treatments for AGA.

Nuevas perspectivas en el tratamiento de la alopecia androgenética / New Perspectives on the Treatment of Androgenetic Alopecia

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Estudio transversal acerca de los hábitos de prescripción en alopecia androgénica de los dermatólogos en España en 2017 / Prescribing Habits for Androgenic Alopecia Among Dermatologists in Spain in 2017: A Cross-Sectional Study

INTRODUCCIÓN: A pesar de que los únicos fármacos con indicación aprobada en nuestro país para la alopecia androgénica (AGA) son minoxidil tópico y finasterida oral, es común la utilización de numerosas terapias fuera de indicación, provocando una gran variabilidad en el manejo de estos pacientes. El objetivo principal de este trabajo fue describir los hábitos de prescripción de los dermatólogos en España en AGA masculina (MAGA) y AGA femenina (FAGA). MATERIAL Y MÉTODOS: Estudio descriptivo transversal mediante cuestionarios digitales autocumplimentados por dermatólogos que ejercen en territorio español. RESULTADOS: Se incluyeron las respuestas de un total de 241 dermatólogos. En MAGA los tratamientos más utilizados fueron en este orden: minoxidil tópico (98%), finasterida oral (96%), nutricosméticos (44%), finasterida tópica (37%), dutasterida oral (33%), plasma rico en plaquetas (14%) y láser de baja potencia (8%). En FAGA premenopáusica: minoxidil tópico (98%), anticonceptivos orales (81%), nutricosméticos (72%), acetato de ciproterona (58%), finasterida oral (39%), finasterida tópica (39%), espironolactona (27%), plasma rico en plaquetas (20%), dutasterida oral (20%), flutamida oral (18%) y láser de baja potencia (7%). En FAGA posmenopáusica: minoxidil tópico (98%), finasterida oral (84%), nutricosméticos (68%), finasterida tópica (50%), dutasterida oral (35%), plasma rico en plaquetas (21%), espironolactona (16%), acetato de ciproterona (16%), flutamida oral (9%) y láser de baja potencia (9%). Como limitaciones de nuestro estudio, no se incluyeron terapias novedosas para AGA como minoxidil oral o microinyecciones de dutasterida. CONCLUSIONES: Los agentes terapéuticos más utilizados en MAGA y FAGA posmenopáusica por los dermatólogos en España fueron minoxidil tópico, finasterida oral y nutricosméticos, mientras que en FAGA premenopáusica fueron minoxidil tópico, anticonceptivos orales y nutricosméticos

BACKGROUND: Topical minoxidil and oral finasteride are the only drugs approved for the treatment of androgenetic alopecia (AGA) in Spain. However, the management of this condition is highly variable because numerous treatments are used off-label. The main aim of this study was to describe the prescribing habits of dermatologists in Spain for male AGA (MAGA) and female AGA (FAGA). MATERIAL AND METHODS: Descriptive cross-sectional study using online questionnaires completed by dermatologists working in Spain. RESULTS: The responses of 241 dermatologists were analyzed. The most common treatments prescribed for MAGA were minoxidil (98%), oral finasteride (96%), nutricosmetics (44%), topical finasteride (37%), oral dutasteride (33%), platelet-rich plasma (14%), and low-level laser therapy (8%). For premenopausal FAGA, the most common treatments were topical minoxidil (98%), oral contraceptives (81%), nutricosmetics (72%), cyproterone acetate (58%), oral finasteride (39%), topical finasteride (39%), spironolactone (27%), platelet-rich plasma (20%), oral dutasteride (20%), oral flutamide (18%), and low-level laser therapy (7%). Finally, for postmenopausal FAGA, the most common treatments prescribed were topical minoxidil (98%), oral finasteride (84%), nutricosmetics (68%), topical finasteride (50%), oral dutasteride (35%), platelet-rich plasma (21%), spironolactone (16%), cyproterone acetate (16%), oral flutamide (9%), and low-level laser therapy (9%). A limitation of our study is that we did not analyze novel AGA treatments such as oral minoxidil and dutasteride mesotherapy. CONCLUSIONS:The most common treatments prescribed for AGA by dermatologists in Spain are topical minoxidil, oral finasteride, and nutricosmetics for MAGA and postmenopausal FAGA and topical minoxidil, oral contraceptives, and nutricosmetics for premenopausal FAGA

5α-Reductase inhibitors increase acute coronary syndrome risk in patients with benign prostate hyperplasia.

BACKGROUND: This study explored the possible association between the use of two typical 5ARIs (finasteride and dutasteride) and the risk of acute coronary syndrome (ACS) in patients with benign prostate hyperplasia (BPH). METHODS: From the claims data of the Taiwan National Health Insurance (NHI) Taiwan, we identified 1843 ACS cases among BPH patients and randomly selected 7330 controls without ACS, with a similar mean age of 73 years. Multivariate logistic regression analysis estimated the odds ratio (OR) and 95 % confidence interval (CI) for the relationship between the 5ARIs medications and ACS risk. RESULTS: We found that BPH patients who had received treatment with both finasteride and dutasteride were at a higher risk of ACS with an OR of 3.47 (95 % CI 1.05-11.5), compared to patients without 5ARIs treatment. Furthermore, the dosage analysis showed that there were no significant associations between ACS risk and uses of a single drug medication regardless the dosages. The ORs for those who took only dutasteride were 1.07 (95 % CI 0.39-2.99) with low dose and 0.73 (95 % CI 0.38-1.44) with high dose. The ORs for those who took only finasteride were 1.30 (95 % CI 0.89-1.92) with low dose and 0.98 (95 % CI 0.19-5.13) with high dose. CONCLUSION: This population-based nested case-control study suggests that 5ARI use may increase ACS risk among patients with BPH when patients were exposed to both finasteride and dutasteride.