Great question! axSpA (axial spondyloarthritis) and ankylosing spondylitis (AS) are related, but not exactly the same thing. Think of them as part of the same family.
axSpA is the broader term that includes two stages:
- Nonradiographic axSpA (nr-axSpA) — inflammation is visible on MRI, but no structural damage shows up on Show Full Answer
Great question! axSpA (axial spondyloarthritis) and ankylosing spondylitis (AS) are related, but not exactly the same thing. Think of them as part of the same family.
axSpA is the broader term that includes two stages:
- Nonradiographic axSpA (nr-axSpA) — inflammation is visible on MRI, but no structural damage shows up on X-rays yet
- Radiographic axSpA (AS) — damage is visible on X-rays, and this is what is called ankylosing spondylitis So ankylosing spondylitis is essentially a more advanced stage of axSpA, where the damage has progressed enough to be seen on imaging. Not everyone with nr-axSpA will progress to AS.
Both share similar symptoms like inflammatory back pain, morning stiffness, fatigue, and hip pain — but early treatment can help slow progression and protect your joints long-term.
7 days ago