title: Pincer nail deformity associated with systemic lupus erythematosus.
abstract: BACKGROUND
  Systemic lupus erythematosus (SLE) is an autoimmune disorder with various systemic and cutaneous manifestations. Nail abnormalities, including onycholysis, red lunulae, pitting, and ridging, have been seen in patients with the disorder. To our knowledge, however, pincer nail deformity has yet to be reported coincident with the onset of SLE.
  
  
  OBJECTIVE
  We report a case of pincer nail deformity subsequent to the development of SLE and describe surgical treatment of the deformed nails. This is followed by a review of the literature.
  
  
  CONCLUSIONS
  Acquired pincer nail is a dystrophy with numerous reported causative associations, including psoriasis, tumors of the nail apparatus, tinea ungium, ss-blocker usage, and now SLE. Pain from the resulting constriction can interfere greatly with daily activities and can be debilitating to the extent of requiring therapy.
authors.affiliation: Division of Dermatology, University of Alberta, Edmonton, Alberta, Canada.
authors.forename: Candace
authors.initials: C
authors.lastname: Majeski
authors.forename: Bruce
authors.initials: B
authors.lastname: Ritchie
authors.forename: Martin
authors.initials: M
authors.lastname: Giuffre
authors.forename: Gilles
authors.initials: G
authors.lastname: Lauzon
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000150:complications*; D009264:Nails, Malformed / Q000209:etiology* / Q000601:surgery*