Pérez-Ferriols A , Barnadas M , Gardeazábal J , de Argila D , Carrascosa JM , Aguilera P , Giménez-Arnau A , Rodríguez-Granados T , de Gálvez MV , Aguilera J ;
Resumen
FONDO:
La urticaria solar es una urticaria crónica inducible también clasificada como dermatosis idiopática. El objetivo de este trabajo es definir las características fenotípicas de la urticaria solar y evaluar su incidencia.
MATERIAL Y MÉTODO:
Este fue un estudio retrospectivo multicéntrico en el que se recopilaron datos sobre la epidemiología y las características clínicas, fotobiológicas, de laboratorio y terapéuticas de la urticaria solar.
RESULTADOS:
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CONCLUSIONES:
Hemos presentado la serie más grande de urticaria solar publicada hasta la fecha. Los hallazgos epidemiológicos, clínicos y fotobiológicos confirman los datos informados previamente, aunque hubo una tasa particularmente alta de fotopruebas negativas en nuestra serie. La reactividad exclusivamente a la luz visible o natural se asoció con una mayor probabilidad de resolución. No se observó una tendencia creciente en la incidencia anual.
Fuente: PubMed
Solar urticaria: Epidemiology and clinical phenotypes in a Spanish series of 224 patients.
Abstract
BACKGROUND:
Solar urticaria is a chronic inducible urticaria also classified as an idiopathic dermatosis. The objective of this paper is to define the phenotypic characteristics of solar urticaria and to evaluate its incidence.
MATERIAL AND METHOD:
This was a retrospective multicenter study in which data were gathered on the epidemiology and clinical, photobiologic, laboratory, and therapeutic characteristics of solar urticaria.
RESULTS:
A total of 224 patients (141 women and 83 men) were included from 9 photobiology units. The mean age of the patients was 37.9 years (range, 3-73 years). A history of atopy was detected in 26.7%, and the most common presentation was allergic rhinitis (16.5%). Clinical signs were limited to sun-exposed areas in 75.9% of patients. The light spectrum most commonly implicated was visible light only (31.7%), and in 21% of cases it was only possible to trigger solar urticaria with natural light. The treatments most widely used by photobiology experts were oral antihistamines (65.46%), followed by different forms of phototherapy (34%). Complete resolution was observed most often in patients with solar urticaria triggered exclusively by visible or natural light, with statistically significant differences with respect to other wavelengths (P<.05). No increase in the annual incidence of solar urticaria was observed.
CONCLUSIONS:
We have presented the largest series of solar urticaria published to date. The epidemiological, clinical, and photobiologic findings confirm previously reported data, although there was a particularly high rate of negative phototests in our series. Reactivity exclusively to visible or natural light was associated with a higher probability of resolution. No increasing trend was observed in the annual incidence.