title: When the exception proves the rule: pityriasis rotunda of difficult classification.
authors.affiliation: Department of Medical Sciences, Section of Dermatology, University of Ferrara, Ferrara, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Borghi
authors.affiliation: Department of Medical Sciences, Section of Dermatology, University of Ferrara, Ferrara, Italy.
authors.forename: Michela
authors.initials: M
authors.lastname: Ricci
authors.affiliation: Department of Medical Sciences, Section of Dermatology, University of Ferrara, Ferrara, Italy.
authors.forename: Giulia
authors.initials: G
authors.lastname: Ruina
authors.affiliation: Department of Medical Sciences, Section of Dermatology, University of Ferrara, Ferrara, Italy.
authors.forename: Monica
authors.initials: M
authors.lastname: Corazza
authors.affiliation: Department of Medical Sciences, Section of Dermatology, University of Ferrara, Ferrara, Italy.
authors.forename: Annarosa
authors.initials: A
authors.lastname: Virgili
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D010915:Pityriasis / Q000473:pathology*