CRP and enthesitis: PASDAS is a disease activity index for psoriatic arthritis based on patient (PtGA) and physician (PhGA) global, visual analog scale (VAS) scores, tender (SJC66) and swollen (SJC68) joint counts, dactylitis, enthesitis, the physical component score of the short form 36 health survey (SF36-PCS), and C-reactive protein (CRP) level [106].