Ankylosing spondylitis is inflammatory arthritis that mainly affects the spine and can cause pain and stiffness.
Ankylosing spondylitis is a form of inflammatory arthritis that mainly affects the spine. Inflammation can cause back pain and stiffness. The pattern and impact vary between people.
No. Clinicians consider symptoms, examination, and test findings together. An imaging result or blood test may contribute, but no single result establishes the condition by itself.

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