title: Erythema dyschronicum perstans showing an ash-colored hyperpigmented lesion and an adjacent incompletely hypopigmented lesion surrounded by an erythematous border: a boundary spectrum to annular lichenoid dermatitis of youth?
authors.forename: Naoki
authors.initials: N
authors.lastname: Oiso
authors.forename: Akira
authors.initials: A
authors.lastname: Kawada
mesh_terms: D000293:Adolescent; D004890:Erythema / Q000473:pathology*; D006801:Humans; D017495:Hyperpigmentation / Q000473:pathology*; D017496:Hypopigmentation / Q000473:pathology*; D017512:Lichenoid Eruptions / Q000473:pathology*; D008297:Male