TY - JOUR T1 - Psoriatic Arthritis <em>sine</em> Psoriasis JF - The Journal of Rheumatology JO - J Rheumatol SP - 28 LP - 29 DO - 10.3899/jrheum.090218 VL - 83 AU - IGNAZIO OLIVIERI AU - ANGELA PADULA AU - SALVATORE D'ANGELO AU - MARIA STEFANIA CUTRO Y1 - 2009/08/01 UR - http://www.jrheum.org/content/83/28.abstract N2 - In about 20% of patients with psoriatic arthritis (PsA) the rheumatological manifestations precede the onset of the cutaneous lesions. If there is a family history of psoriasis these patients are diagnosed as having psoriatic arthritis sine psoriasis. In the past, they were also classified among patients with undifferentiated spondyloarthritis. The clinical spectrum of PsA sine psoriasis is wide and identified by dactylitis and/or distal interphalangeal arthritis, HLA-Cw6, and a family history of psoriasis. The ClASiffication of Psoriatic ARthritis (CASPAR) criteria of PsA include PsA sine psoriasis. ER -