Article Text

Download PDFPDF
Prevalence and incidence of psoriasis and psoriatic arthritis
  1. Philipp Sewerin,
  2. Ralph Brinks,
  3. Matthias Schneider,
  4. Isabell Haase,
  5. Stefan Vordenbäumen
  1. Medical Faculty, Department of Rheumatology and Hiller Research Unit Rheumatology, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
  1. Correspondence to Dr Philipp Sewerin, Medical Faculty, Department Rheumatology and Hiller Research Unit Rheumatology, Heinrich-Heine-University Düsseldorf, Düsseldorf 40225, Germany; philipp.sewerin{at}

Statistics from

Psoriasis (Pso) and psoriatic arthritis (PsA) are inflammatory disorders which can severely impair health and quality of life. For both Pso and PsA, an increasing prevalence has been reported.1 2 Comprehensive data on the prevalence and incidence of Pso and PsA are important in order to adequately allocate specialist care and financial resources. These data are incomplete for Pso and especially PsA. In particular, no population-based study has estimated their prevalence or incidence in Germany. We obtained the statutory health insurance data of approximately 65 million people from 2009 to 2012, covering 80% of the German population. Pso and PsA age-standardised prevalence based on the International Classification of Diseases (ICD) codes was obtained and age-standardised incidence rates calculated as described previously.3 Briefly, cross-sectional prevalence data of consecutive years were used in conjunction with different assumed mortality rates of 1.1–1.5, with assumed …

View Full Text


  • Handling editor Josef S Smolen

  • Contributors PS, RB, MS, IH and SV contributed to the design and implementation of the research, to the analysis of the results and to the writing of the manuscript.

  • Competing interests None declared.

  • Patient consent Not required.

  • Provenance and peer review Not commissioned; externally peer reviewed.

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.