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Seronegative spondyloarthritides.

Ignazio Olivieri1, Astrid van Tubergen, Carlo Salvarani

  • 1Rheumatology Department of Lucania, Ospedale San Carlo, San Carlo Hospital of Potenza and Madonna delle Evazie Hospital of Matera, 85100, Potenza, Italy. ignazioolivieri@tiscalinet.it

Best Practice & Research. Clinical Rheumatology
|December 11, 2002
PubMed
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New classification criteria reveal higher spondyloarthritis prevalence. Studies using Amor and European Spondyloathropathy Study Group (ESSG) criteria show increased disease detection, impacting epidemiological understanding.

Area of Science:

  • Rheumatology
  • Epidemiology

Background:

  • Epidemiological studies of spondyloarthritides were previously limited by inadequate classification criteria.
  • Prevalence estimates for these conditions have historically been underestimated.

Purpose of the Study:

  • To assess the prevalence of spondyloarthropathies using updated classification criteria.
  • To understand the impact of new criteria on disease prevalence and incidence reporting.

Main Methods:

  • Application of the Amor criteria and the European Spondyloathropathy Study Group (ESSG) criteria.
  • Analysis of epidemiological data, including prevalence and incidence of specific spondyloarthropathies.
  • Evaluation of an inception cohort of inflammatory bowel disease patients for spondyloarthritis using ESSG criteria.

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Main Results:

  • The Amor and ESSG criteria indicate a higher total prevalence of spondyloarthropathies than previously estimated.
  • Prevalence of ankylosing spondylitis correlates with HLA B27-associated subtypes.
  • Reactive arthritis prevalence is under-reported due to diagnostic challenges.
  • Psoriatic arthritis data remains limited.
  • 18% of inflammatory bowel disease patients in a European cohort met ESSG criteria for spondyloarthritis.
  • Undifferentiated spondyloarthritis is a frequent subtype.

Conclusions:

  • Updated classification criteria have significantly increased the detected prevalence of spondyloarthropathies.
  • Further research is needed to accurately ascertain the prevalence and incidence of specific spondyloarthritis subtypes, particularly reactive and psoriatic arthritis.
  • Undifferentiated spondyloarthritis represents a substantial proportion of these diseases.