Is Spondyloarthritis and Ankylosing Spondylitis the same?

There is a group of diseases called the ‘Spondyloarthropathies’ encompasses several different diseases which include: ankylosing spondylitis, psoriatic arthritis, reactive arthritis, undifferentiated spondyloarthropathy, and inflammatory bowel disease-associated arthritis. Although each of these diseases is unique and has unique characteristics, all of them can involve inflammation of the axial skeleton (spine and sacroiliac joints) which is unique from RA.