title: The first images of atopic dermatitis: an attempt at retrospective diagnosis in dermatology.
abstract: BACKGROUND
  Atopic dermatitis was defined in 1933. Earlier descriptions have yet not been thoroughly studied.
  
  
  OBJECTIVE
  Our purpose was to identify the first images of atopic dermatitis among historical illustrations of skin diseases.
  
  
  METHODS
  We posted 20 selected images on an Internet site and asked experts in pediatric dermatology to decide whether or not they represented atopic dermatitis.
  
  
  RESULTS
  By means of the Delphi technique, a consensus could be reached for 19 of the 20 images. The experts' accuracy was good.
  
  
  CONCLUSIONS
  Thirty-one experts participated. No validated criteria were used for the selection of the images.
  
  
  CONCLUSIONS
  The first representations of atopic dermatitis are engravings of skin diseases described under the names of strophulus confertus (Willan, 1796), lichen agrius (Willan, 1796), porrigo larvalis (Bateman, 1816), and eczema rubrum (Rayer, 1835). Teledermatology techniques can be reliably applied to retrospective diagnosis.
authors.forename: Daniel
authors.initials: D
authors.lastname: Wallach
authors.forename: Joël
authors.initials: J
authors.lastname: Coste
authors.forename: Gérard
authors.initials: G
authors.lastname: Tilles
authors.forename: Alain
authors.initials: A
authors.lastname: Taïeb
mesh_terms: D000716:Anatomy, Artistic / Q000266:history; D003697:Delphi Technique; D003876:Dermatitis, Atopic / Q000266:history*; D003880:Dermatology / Q000266:history*; D049671:History, 18th Century; D049672:History, 19th Century; D006801:Humans; D008488:Medical Illustration / Q000266:history