title: Palindromic rheumatism is a common disease: comparison of new-onset palindromic rheumatism compared to new-onset rheumatoid arthritis in a 2-year cohort of patients.
abstract: OBJECTIVE
  To determine the prevalence of palindromic rheumatism (PR) compared to new-onset rheumatoid arthritis (RA).
  
  
  METHODS
  We reviewed 145 patients that had been newly diagnosed by a rheumatologist with either RA or PR between May 2004 and May 2006.
  
  
  RESULTS
  Of these 145 patients, 51 were diagnosed with PR and 94 with RA. There was a similar female predominance with both conditions. The average age at diagnosis of PR was 49 years as compared to 56 years for RA.
  
  
  CONCLUSIONS
  Palindromic rheumatism occurs more frequently than previously recognized.
authors.affiliation: University of Alberta, Edmonton, Alberta, Canada.
authors.forename: Anne
authors.initials: A
authors.lastname: Powell
authors.forename: Paul
authors.initials: P
authors.lastname: Davis
authors.forename: Niall
authors.initials: N
authors.lastname: Jones
authors.forename: Anthony S
authors.initials: AS
authors.lastname: Russell
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000416:Alberta / Q000453:epidemiology; D001172:Arthritis, Rheumatoid / Q000453:epidemiology*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012216:Rheumatic Diseases / Q000453:epidemiology*; D013577:Syndrome