Onset of psoriasis and arthritis are as follows:
Psoriasis appears to precede the onset of psoriatic arthritis in 60%-80% of patients (occasionally by as many as 20 years, but usually by less than 10 years)
In as many as 15%-20% of patients, arthritis appears before the psoriasis
Occasionally, arthritis and psoriasis appear simultaneously
For more on the onset of psoriatic arthritis, read here.
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Any views expressed above are the author's own and do not necessarily reflect the views of WebMD or Medscape.
Cite this: Herbert S. Diamond. Fast Five Quiz: How Much Do You Know About Psoriatic Arthritis? - Medscape - Jun 13, 2016.