Spondyloarthritis is an umbrella term for arthritis diseases that primarily affect the spine. Non-radiographic axial spondyloarthritis (nr-axSpA) is one type of spondyloarthritis.
The “nr” in nr-axSpA stands for “non-radiographic.” This is one way to differentiate it from another type of arthritis that affects the spine, called ankylosing spondylitis. Non-radiographic is just a fancy way of saying there’s no damage visible on X-rays. By contrast, patients with ankylosing spondylitis will have visible damage to the bone on X-rays. Technically, nr-axSpA can be early-stage ankylosing spondylitis. Symptoms of nr-axSpA vary from person to person, so it’s important to get a proper diagnosis.
UpToDate. (2022). Overview of the clinical manifestations and classification of spondyloarthritis.
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