title: Late-onset alopecia areata: descriptive analysis of 30 cases.
abstract: Alopecia areata is an autoimmune disease characterized by non-scaring hair loss. The onset in over 50-year-old patients is rare and has barely been studied. Cases of this disease have been retrospectively analyzed - according to clinical forms, extension, and associated diseases - to assess alopecia areata characteristics in a group of patients whose disease onset was after the age of 50. 30 patients were studied; a few of them presented with autoimmune-related diseases or family history. The disease onset after the age of 50 seems to have different characteristics from those found in young people.
authors.affiliation: Irmandade da Santa Casa de Misericórdia de São Paulo - São Paulo (SP), Brazil.
authors.forename: Rosana
authors.initials: R
authors.lastname: Lazzarini
authors.affiliation: Irmandade da Santa Casa de Misericórdia de São Paulo - São Paulo (SP), Brazil.
authors.forename: Camila Bilac
authors.initials: CB
authors.lastname: Oliari
authors.affiliation: Irmandade da Santa Casa de Misericórdia de São Paulo - São Paulo (SP), Brazil.
authors.forename: Ana Luisa Nasser
authors.initials: AL
authors.lastname: Erthal
mesh_terms: D017668:Age of Onset; D000368:Aged; D000369:Aged, 80 and over; D000506:Alopecia Areata / Q000453:epidemiology* / Q000473:pathology; D001938:Brazil / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012720:Severity of Illness Index; D012737:Sex Factors