About this information
This NHS content is written for people in England. Services, entitlements and contact routes may differ in other countries.
Read about ankylosing spondylitis (AS) and other types of axial spondyloarthritis, a long-term (chronic) condition in which the spine and other areas of the body become inflamed.
Content supplied by the NHS website, refreshed 20 August 2026. View the original NHS article ↗
Licensed under the Open Government Licence v3.0 ↗. MyPHU is independent and is not endorsed by the NHS.