Extra-Articular Manifestations of Spondyloarthritis

The Spondyloarthritis (SpA) are a group of chronic inflammatory rheumatic diseases whose feature common involvement of the axial skeleton, although in different forms and evolution can affect peripheral joints, with a prevalence of approximately 1.5-2% of the general population [1,2]. Inside this entity includes ankylosing spondylitis (AS), asymmetrical synovitis with skin compromise (eg, psoriatic arthritis), arthritis accompanying inflammatory bowel disease (IBD) (eg, Crohn disease and ulcerative colitis), and reactive arthritis [3].