Dermoscopic characterization of longitudinal melanocytic lesions on acral skin / Caracterización dermatoscópica de lesiones melanocíticas longitudinales sobre la piel acral

No disponible

FR- Las urgencias en dermatología / Dermatologic Emergencies

No disponible

Actualización en la dermatitis de contacto alérgica por metilcloroisotiazolinona/metilisotiazolinona y metilisotiazolinona / Update on Allergic Contact Dermatitis Due to Methylchloroisothiazolinone/Methylisothiazolinone and Methylisothiazolinone

La combinación de metilcloroisotiazolinona (MCI) con metilisotiazolinona (MI) es ampliamente empleada como conservante tanto en productos de higiene y domésticos como industriales. Desde 2005 está permitido el uso de MI a 100 ppm en cosméticos. En los últimos años se está detectando un aumento considerable de los casos de dermatitis de contacto a los 2 conservantes, por lo que es necesaria una monitorización estrecha por parte de las autoridades y probablemente unas medidas legislativas más estrictas. De hecho, MI a 2000 ppm se ha incluido recientemente en la batería estándar Europea. La forma de presentación clínica es muy variable, y en ocasiones es difícil sospechar una alergia a MCI/MI y MI. MCI/MI se testa en la batería estándar del GEIDAC a 100 ppm, pero con esta concentración se podría estar dejando de diagnosticar hasta la mitad de los casos. Además, según nuestros datos MCI/MI a 200 ppm permite diagnosticar más casos con alergia a MI. Para llegar a un buen diagnóstico consideramos que se debería aumentar la concentración del parche de MCI/MI a 200 ppm e incluir MI en la batería estándar del GEIDAC

The combination of methylchloroisothiazolinone (MCI) and methylisothiazolinone (MI) is widely used as a preservative in cosmetics, household, and industrial products. Furthermore, MI at a concentration of 100 ppm has been permitted in cosmetic products since 2005. Recently, a considerable increase in cases of contact dermatitis to both MCI and MI have been noted, and this warrants closer monitoring by relevant authorities and, probably, stricter legislation. In fact, MI at a test concentration of 2000 ppm was recently included in the European baseline patch test series. The clinical manifestations of allergy to MCI/MI and MI are highly variable and diagnosis is often missed. In the standard patch test series of the Spanish Contacto Dermatitis and Skin Allergy Research Group (GEIDAC), MCI/MI is tested at 100 ppm, but at this concentration, up to 50% of cases might go undetected. Furthermore, our data indicate that MCI/MI at 200 ppm would make it possible to diagnose more cases of contact allergy to MI. To improve the diagnosis of contact allergy to MCI/MI and MI, we believe that the test concentration of MCI/MI should be increased to 200 ppm in the GEIDAC standard series and that MI should be added in the GEIDAC standard series

Update on allergic contact dermatitis due to methylchloroisothiazolinone/methylisothiazolinone and methylisothiazolinone.

The combination of methylchloroisothiazolinone (MCI) and methylisothiazolinone (MI) is widely used as a preservative in cosmetics, household, and industrial products. Furthermore, MI at a concentration of 100 ppm has been permitted in cosmetic products since 2005. Recently, a considerable increase in cases of contact dermatitis to both MCI and MI have been noted, and this warrants closer monitoring by relevant authorities and, probably, stricter legislation. In fact, MI at a test concentration of 2000 ppm was recently included in the European baseline patch test series. The clinical manifestations of allergy to MCI/MI and MI are highly variable and diagnosis is often missed. In the standard patch test series of the Spanish Contact Dermatitis and Skin Allergy Research Group (GEIDAC), MCI/MI is tested at 100 ppm, but at this concentration, up to 50% of cases might go undetected. Furthermore, our data indicate that MCI/MI at 200 ppm would make it possible to diagnose more cases of contact allergy to MI. To improve the diagnosis of contact allergy to MCI/MI and MI, we believe that the test concentration of MCI/MI should be increased to 200 ppm in the GEIDAC standard series and that MI should be added in the GEIDAC standard series.

Omalizumab en el tratamiento de la urticaria crónica / Omalizumab in the Treatment of Chronic Urticaria

Omalizumab es un anticuerpo monoclonal anti-IgE únicamente aprobado para su uso en el asma grave refractario. En los últimos años han sido publicados un gran número de casos clínicos de urticaria crónica de difícil manejo terapéutico que han respondido de forma adecuada al tratamiento con omalizumab. Por ese motivo, se han puesto en marcha ensayos clínicos para ampliar la indicación a esta enfermedad, y recientemente el fármaco ha sido incluido en una guía de consenso para el tratamiento de la urticaria crónica como fármaco de tercera línea después de los antihistamínicos selectivos a dosis altas. El objetivo de este artículo es realizar una actualización integral de la aplicación de omalizumab en el tratamiento de la urticaria crónica: revisaremos su estructura, discutiremos los hipotéticos mecanismos de acción en esta enfermedad y expondremos su modo de empleo y las diferentes posologías empleadas en las series de casos publicados hasta el momento. Por otro lado, también enumeraremos sus efectos secundarios y daremos las pautas de prevención a seguir para minimizar su efecto secundario más temible, la anafilaxia. En definitiva, y según la experiencia de muchos investigadores, omalizumab se perfila como un fármaco novedoso que ha mostrado resultados prometedores en algunos tipos de urticaria crónica espontánea resistente con un buen perfil de seguridad, aunque con la principal limitación de su elevado coste económico

Omalizumab is a monoclonal anti-immunoglobulin E antibody currently only approved for use in severe, refractory asthma. In recent years, many authors have reported satisfactory results with omalizumab in patients with difficult-to-treat chronic urticaria. As a result, clinical trials were undertaken to broaden the indication of omalizumab to include chronic urticaria, and the drug was recently cited as a third-line treatment after selective antihistamines at high doses in a consensus document on the treatment of chronic urticaria. In this article our aim is to provide a comprehensive update on the use of omalizumab in the treatment of chronic urticaria. The structure of this biologic agent and its possible mechanisms of actions in this setting will be presented. Treatment strategies and the different dosage regimens used in the series of cases published to date will also be reviewed. Finally, we will discuss the adverse effects that may arise with treatment and the recommended strategies for minimizing the most feared effect, anaphylaxis. Based on the experience of many researchers, omalizumab is emerging as a novel treatment for certain types of spontaneous refractory chronic urticaria and has shown promising results in this setting. The drug has a good safety profile and the main limitation is its high cost

Omalizumab in the treatment of chronic urticaria.

Omalizumab is a monoclonal anti-immunoglobulin E antibody currently only approved for use in severe, refractory asthma. In recent years, many authors have reported satisfactory results with omalizumab in patients with difficult-to-treat chronic urticaria. As a result, clinical trials were undertaken to broaden the indication of omalizumab to include chronic urticaria, and the drug was recently cited as a third-line treatment after selective antihistamines at high doses in a consensus document on the treatment of chronic urticaria. In this article our aim is to provide a comprehensive update on the use of omalizumab in the treatment of chronic urticaria. The structure of this biologic agent and its possible mechanisms of actions in this setting will be presented. Treatment strategies and the different dosage regimens used in the series of cases published to date will also be reviewed. Finally, we will discuss the adverse effects that may arise with treatment and the recommended strategies for minimizing the most feared effect, anaphylaxis. Based on the experience of many researchers, omalizumab is emerging as a novel treatment for certain types of spontaneous refractory chronic urticaria and has shown promising results in this setting. The drug has a good safety profile and the main limitation is its high cost.