title: [Photo-induced sarcoidosis].
abstract: BACKGROUND
  Among the multiple forms of clinically atypical cutaneous sarcoidosis, lesions limited to light-exposed areas are rare. We describe a fourth observation.
  
  
  METHODS
  A phototype V 51-year-old woman, born in Tunisia presented with papular erythema on the face. Treatment with topical steroids did not result in any improvement. Biopsy specimen revealed a non caseating granuloma according with sarcoidosis. Assessment for systemic sarcoidosis was negative. Phototesting showed no abnormalities. The patient was successfully treated with chloroquine.
  
  
  CONCLUSIONS
  Only three similar observations are reported in the literature. The role of light exposure despite the negative phototesting seems to be real. The tallying of these four observations permits one to isolate photo-induced sarcoidosis as a single entity.
authors.affiliation: Service de dermatologie, Hôpital de l'Antiquaille, 1, rue de l'Antiquaille, 69321 Lyon Cedex 05.
authors.forename: F
authors.initials: F
authors.lastname: Truchot
authors.forename: F
authors.initials: F
authors.lastname: Skowron
authors.forename: S
authors.initials: S
authors.lastname: Grande
authors.forename: B
authors.initials: B
authors.lastname: Balme
authors.forename: H
authors.initials: H
authors.lastname: Perrot
authors.forename: F
authors.initials: F
authors.lastname: Bérard
mesh_terms: D005260:Female; D006801:Humans; D008875:Middle Aged; D010787:Photosensitivity Disorders / Q000150:complications*; D012507:Sarcoidosis / Q000209:etiology*; D012871:Skin Diseases / Q000209:etiology*