Spondylitis is arthritis of the spine. Ankylosing means stiffened. So ankylosing spondylitis is a type of arthritis that makes your spine painful and stiff.
Ankylosing spondylitis (AS) is commonly referred to as arthritis of the spine. Typically, the painful form of arthritis strikes people, mostly men, in their 20s.
Ankylosing spondylitis, in addition to affecting your spine, also causes swelling, stiffness, and pain in your large joints, fingers, and toes Sometimes it affects other parts