Pablo Fernández-Crehuet1, Ricardo Ruiz-Villaverde2. 1. Dermatology Department (Fernández-Crehuet), Hospital Alto Guadalquivir, Andújar, Spain; Dermatology Department (Ruiz-Villaverde), Hospital Universitario Virgen de las Nieves, Granada, Spain pablocrehuet@hotmail.com. 2. Dermatology Department (Fernández-Crehuet), Hospital Alto Guadalquivir, Andújar, Spain; Dermatology Department (Ruiz-Villaverde), Hospital Universitario Virgen de las Nieves, Granada, Spain.