Table 2.

CASPAR criteria for diagnosis of PsA[24]

Patient has one of either joint or spine or entheseal inflammatory arthritis AND ≥3 points as per the following criteria=PsA
	Points
Evidence of PsO (any one):
a) Current PsO	2
b) Personal history of PsO	1
c) Family history of PsO	1
d) No history of PsO	0
Nail PsO – pitting/subungual hyperkeratosis/onycholysis	1
Negative for rheumatoid factor	1
Dactylitis (any one)
a) Current digital swelling	1
b) Past history of dactylitis	1
c) No history of dactylitis	0
Juxta-articular new bone deposition on radiology	1

CASPAR=Classification Criteria for Psoriatic Arthritis, PsA=psoriatic arthritis, PsO=psoriasis