Epidemiology of Psoriasis and Psoriatic Arthritis

  • Rodolfo Perez-AlaminoEmail author
  • Hisham Sharlala
  • Ade Adebajo
  • Luis R. Espinoza


Psoriatic arthritis (PsA) is a unique type of chronic inflammatory arthritis that occurs in association with the skin manifestations of psoriasis, commonly presenting with extra articular manifestations which includes nail involvement, enthesitis and dactilitis. It is also important to note that like rheumatoid arthritis PsA has been shown to have significant cardiovascular comorbidities.

Studying the epidemiology of PsA has been limited by the lack of a universally agreed classification criteria. Since the introduction of the CASPAR classification criteria, we are seeing a promising trend towards the acceptance of this criteria as an internationally agreed method for present and future epidemiological and research work in the field of PsA.

In this chapter we present the available data on the incidence and prevalence of Psoriasis, PsA and the possible associated CVD comorbidities. The data show the extent of variabilities of PsA incidence and prevalance between different ethnic and population groups. The highest reported prevalence of Psoriasis worldwide (11.8 %) came from Kazakhastan, and generally believed to be higher in populations of European ethnicity and lowest in West Africa and East Asia.

The prevalance of PsA in the general population ranged from the highest reported in Italy 0.42 % to the lowest in Japan at 0.001 %. On the other hand the prevalence of PsA in Psoriasis patients increases to the range of 6–40 %.

The incidence of reported cases of PsA is gradually increasing due to the improved awareness of the condition amongst primary care physicians.


Prevalence Subgroups Demographics Psoriasis Psoriatic arthritis 


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Rodolfo Perez-Alamino
    • 1
    Email author
  • Hisham Sharlala
    • 2
  • Ade Adebajo
    • 3
  • Luis R. Espinoza
    • 4
  1. 1.Department of RheumatologyHospital AvellanedaSan Miguel De TucumanArgentina
  2. 2.Department of RheumatologyBarnsley District General HospitalBarnsley, South YorkshireUK
  3. 3.Faculty of Medicine, Dentistry and HealthUniversity of SheffieldSheffieldUK
  4. 4.Internal Medicine, Section of RheumatologyLSU Health Sciences CenterNew OrleansUSA

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