title: Localized Darier disease. Implications for genetic studies.
abstract: BACKGROUND
  Darier disease is an uncommon genodermatosis characterized by the symmetrical eruption of keratotic reddish-brown papules occurring in the seborrheic areas of the body. A unilateral, or localized, variant has been identified. We report 4 new cases of localized Darier disease and review the English-language literature. The implications of these cases on future genetic studies are also discussed.
  
  
  METHODS
  Localized Darier disease occurred with equal frequency in males and females. The average age at onset was 27 years. The most frequent site of involvement was the trunk (40% [16/40]). This condition was aggravated by sunlight, heat, or sweating in 42% (19/40) of reported cases, and 38% (15/40) of the patients responded to treatment with topical tretinoin.
  
  
  CONCLUSIONS
  Many of the clinical features of localized Darier disease suggest that it is a genetic mosaic of generalized Darier disease. Further studies of localized Darier disease may therefore prove to be instrumental in the search for the Darier disease gene.
authors.affiliation: Division of Dermatology, University of Toronto, Ontario.
authors.forename: M P
authors.initials: MP
authors.lastname: O'Malley
authors.forename: A
authors.initials: A
authors.lastname: Haake
authors.forename: L
authors.initials: L
authors.lastname: Goldsmith
authors.forename: D
authors.initials: D
authors.lastname: Berg
mesh_terms: D000005:Abdomen; D000328:Adult; D001365:Axilla; D001706:Biopsy; D002881:Chromosomes, Human, Pair 12; D007644:Darier Disease / Q000235:genetics* / Q000473:pathology; D005260:Female; D006801:Humans; D007866:Leg; D008297:Male; D012867:Skin / Q000473:pathology; D013909:Thorax