La biopsia cutánea en la urticaria crónica: cuándo realizarla, qué buscar y dónde hacerlo

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La biopsia cutánea en la urticaria crónica: cuándo realizarla, qué buscar y dónde hacerlo

Autores: A. López Mateos, M.J. Sánchez Pujol y J.F. Silvestre Salvador

Resumen: La urticaria crónica es una entidad relativamente frecuente en la práctica clínica
habitual, cuyo diagnóstico se establece de forma clínica. Sin embargo, existen ocasiones en las que está indicada la realización de una biopsia cutánea para confirmar el diagnóstico y diferenciarla de otras patologías que pueden cursar con erupciones urticariformes. En este trabajo revisamos los hallazgos histopatológicos que podemos encontrar tanto en la urticaria crónica como en las patologías que plantean un diagnóstico diferencial. Con base en ello, proponemos un algoritmo que recoge las indicaciones para realizar una biopsia cutánea y la orientación del diagnóstico en función de los hallazgos histopatológicos que encontremos en la misma.

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