Ankylosing Spondylitis

Ankylosing Spondylitis (AS) and related diseases called spondyloarthropathies (SpA) are the second most common form of chronic inflammatory arthritis after Rheumatoid Arthritis (RA). Unfortunately, most patients with AS and SpA are either never diagnosed, or they are inadequately treated. The current mean delay in the diagnosis of AS ranges from 5 to 10 years, and the presenting clinical manifestations of these diseases are wide-ranging and heterogeneous.