Arthritis News

The spondyloarthropathies (SpA) are a group of related conditions that include ankylosing spondylitis (AS), reactive arthritis, psoriatic arthritis, the arthritis associated with inflammatory bowel disease, and undifferentiated spondyloarthropathy. Axial involvement (i.e. axial SpA) in these disorders tends to be slowly progressive, requiring in many cases years to decades of clinical symptoms to develop radiographic manifestations.