<prompt> CASPAR criteria is used in diagnosis of :Psoriatic ahritisRheumatoid ahritisAnkyosing spondylitisReactive synovitis  <response>: CASPAR Criterion for Psoriatic Ahritis To be classified as having PsA, a patient must have inflammatory joint disease joint, spine, enthesitis with 3 of the following 5 criteria. 1. Evidence of psoriasis One of these a. Current psoriasis b. Personal history c. Family history 2. Psoriatic nail dystrophy 3. Negative RF 4. Dactylitis One of a, b a. Current b. History 5. Radiological evidence of Juxta-aicular new bone formation. 