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Urticaria - Overview

Nombres alternativos

Ronchas

Definición:

Son ronchas rojizas, elevadas y a menudo pruriginosas que aparecen en la superficie de la piel y que usualmente son una reacción alérgica a algún alimento o medicamento.

Causas:

Cuando usted tiene una reacción alérgica a una sustancia, el cuerpo libera histamina y otros químicos dentro del torrente sanguíneo, causando prurito, inflamación y otros síntomas. La urticaria es una reacción común, especialmente en las personas con otras reacciones alérgicas, como la fiebre de heno.

Cuando la inflamación o las ronchas aparecen alrededor de la cara, especialmente los labios y los ojos, se denomina angioedema. La hinchazón por angioedema también puede ocurrir alrededor de las manos, los pies y la garganta.

Muchas sustancias pueden desencadenar la urticaria, incluyendo:

  • Caspa de animales (en especial de los gatos)
  • Picaduras de insectos
  • Medicamentos
  • Polen
  • Mariscos, pescado, nueces, huevos, leche y otros alimentos

La urticaria también se puede desarrollar como resultado de:

  • Reviewed last on: 5/13/2011
  • Kevin Berman, MD, PhD, Associate, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

Referencias

Habif TP, ed. Clinical Dermatology. 5th ed. Philadelphia, Pa: Mosby Elsevier; 2009.

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