Noninfective arthritis
Psoriatic arthritis

Topic Completed: 1 May 2013

Minor changes: 27 September 2019

Copyright: 2002-2019,, Inc.

PubMed Search: Psoriatic arthritis [title] joints loattrfree full text[sb]

Vijay Shankar, M.D.
Page views in 2019: 730
Page views in 2020 to date: 325
Cite this page: Shankar V. Psoriatic arthritis. website. Accessed May 24th, 2020.
Definition / general
  • Affects 5 - 10% of psoriasis population, usually ages 35 - 45 years
  • Onset or exacerbation may be associated with trauma (Can Fam Physician 2012;58:e636)
  • First affects DIP of hands and feet; similar to rheumatoid arthritis but milder
  • Inflammation of digital tendon sheaths causes sausage fingers
  • Also causes conjunctivitis, iritis
Case reports
Clinical images

Images hosted on other servers:

Psoriasis rash

Swollen and erythematous third digit

Swollen joints

Microscopic (histologic) description
  • Similar to rheumatoid arthritis but tends to be more fibrotic
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