title: Dermoscopy of Biett's sign and differential diagnosis with annular maculo-papular rashes with scaling.
authors.affiliation: Department of Medical, Surgical and Neuro-Sciences, Dermatology Unit, University of Siena, Siena; Department of Medical Biotechnologies, University of Siena, Siena, Italy.
authors.forename: Linda
authors.initials: L
authors.lastname: Tognetti
authors.affiliation: Department of Dermatology, Division of Medical, Surgical and Neurosciences, University of Siena, Siena, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Sbano
authors.affiliation: Department of Dermatology, Division of Medical, Surgical and Neurosciences, University of Siena, Siena, Italy.
authors.forename: Michele
authors.initials: M
authors.lastname: Fimiani
authors.affiliation: Department of Dermatology, Division of Medical, Surgical and Neurosciences, University of Siena, Siena, Italy.
authors.forename: Pietro
authors.initials: P
authors.lastname: Rubegni
mesh_terms: D046169:Dermoscopy / Q000379:methods*; D003937:Diagnosis, Differential; D005076:Exanthema / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008297:Male; D010267:Parapsoriasis / Q000150:complications / Q000175:diagnosis*; D013587:Syphilis / Q000150:complications / Q000175:diagnosis*; D055815:Young Adult