Ediléia Bagatin1,2, Bernado Gontijo1,2. 1. Department of Dermatology, Universidade Federal de Sao Paulo (UNIFESP), Sao Paulo, Brazil. 2. Department of Dermatology, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil. E-mail: edileia_bagatin@yahoo.com.br.