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Xerodermia pigmentosa - Overview

Definición:

Es una rara afección que se transmite de padres a hijos, en la cual la piel y el tejido que cubre el ojo son extremadamente sensibles a la luz ultravioleta.

Causas:

La xerodermia pigmentosa es un trastorno recesivo autosómico, lo cual quiere decir que uno tiene que tener dos copias de un gen anormal para que la enfermedad o el rasgo se manifieste.

La luz ultravioleta, como la que se encuentra en la luz solar, daña el material genético (ADN) en las células de la piel, pero normalmente el cuerpo repara este daño. Sin embargo, en personas que sufren de xerodermia pigmentosa, el cuerpo no repara este daño. Como resultado, la piel se vuelve muy delgada y aparecen parches de variados colores (pigmentación moteada).

La afección también causa vasos sanguíneos aracnoideos en la piel (telangiectasia) y cáncer de piel. Éste último con frecuencia ocurre antes de que el niño tenga 5 años.

  • Reviewed last on: 5/13/2011
  • Kevin Berman, MD, PhD, 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

Abeloff MD, Armitage JO, Niederhuber JE, Kastan MB, McKena WG. Clinical Oncology. 3rd ed. Orlando, Fl: Churchill Livingstone; 2004.

Kumar V, Abbas AK, Fausto N. Robbins and Cotran Pathologic Basis of Disease. 7th ed. St. Louis, Mo: WB Saunders; 2005.

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