title: A novel visual clue for the diagnosis of hypertrophic lichen planus.
authors.affiliation: Department of Dermatology, Drexel University College of Medicine, Philadelphia, PA, USA.
authors.forename: John Patrick
authors.initials: JP
authors.lastname: Welsh
authors.forename: Christopher B
authors.initials: CB
authors.lastname: Skvarka
authors.forename: Herbert B
authors.initials: HB
authors.lastname: Allen
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D008010:Lichen Planus / Q000175:diagnosis* / Q000473:pathology; D010808:Physical Examination