title: Bullous scabies simulating pemphigoid.
abstract: BACKGROUND
  Scabies is a contagious infestation affecting subjects of all ages, races, and social conditions.
  
  
  OBJECTIVE
  We report a case of a 79-year-old man who developed a bullous pemphigoid-like eruption. He presented to our unit 4 months after the onset of symptoms. An autoimmune bullous disease was suspected. Direct immunofluorescence on a skin specimen and anti-desmoglein 1, anti-desmoglein 3, and anti-bullous pemphigoid antigen 180 were negative. Surprisingly, the histology of a skin lesion demonstrated the presence of scabies, which was successfully treated with benzyl benzoate 20%.
  
  
  CONCLUSIONS
  The diagnosis of bullous scabies should be considered for any bullous eruptions accompanied by papules and itching resistant to steroid treatment and with negative immunopathologic findings.
authors.affiliation: Dermatology and Pathology Units, University of Padua, Padua, Italy.
authors.forename: T
authors.initials: T
authors.lastname: Roxana Stan
authors.forename: Stefano
authors.initials: S
authors.lastname: Piaserico
authors.forename: Matteo
authors.initials: M
authors.lastname: Bordignon
authors.forename: Roberto
authors.initials: R
authors.lastname: Salmaso
authors.forename: Edoardo
authors.initials: E
authors.lastname: Zattra
authors.forename: Mauro
authors.initials: M
authors.lastname: Alaibac
mesh_terms: D000368:Aged; D001565:Benzoates / Q000627:therapeutic use; D003937:Diagnosis, Differential; D004817:Epidermis / Q000473:pathology; D019085:Fluorescent Antibody Technique, Direct; D006801:Humans; D007306:Insecticides / Q000627:therapeutic use; D008297:Male; D010391:Pemphigoid, Bullous / Q000175:diagnosis*; D012532:Scabies / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology
chemical_list: D001565:Benzoates; D007306:Insecticides; C006723:benzyl benzoate