Psoriatic arthritis

Psoriasis is a skin inflammation that occurs in about 1% of the population. 20% of people with PsO get PsA.

Diagnosis

 There is no test for PsA. 

Diagnostic criteria

CASPAR critieria [1]

Confirmed inflammatory articular disease (joint, spine, or entheseal)

with at least 3 points from the following features: 

current psoriasis (assigned a score of 2 points; all other features are assigned a score of 1)
2
a history of psoriasis or a family history of psoriasis (unless current psoriasis is present)
1
dactylitis
1
juxtaarticular new bone formation (hands or feet)
1
rheumatoid factor (RF) negativity (except latex test)
1
psoriatic nail dystrophy
1


Treatment

Non-pharmacological treatment

Does diet change help psoriatic arthritis?

Pharmacological treatment

Otezla

[1] The ClASsification for Psoriatic ARthritis (CASPAR) Criteria – A Retrospective Feasibility, Sensitivity, and Specificity Study. WILLIAM TILLETT, LUISA COSTA, DEEPAK JADON, DINNY WALLIS, CHARLOTTE CAVILL, JESSICA McHUGH, ELEANOR KORENDOWYCH and NEIL McHUGH. The Journal of Rheumatology January 2012, 39 (1) 154-156; DOI: https://doi.org/10.3899/jrheum.110845