How common is ankylosing spondylitis (AS)?
How common is ankylosing spondylitis (AS)?
Ankylosing spondylitis belongs to a group of diseases known as spondyloarthropathies. Between three and 13 out of 1,000 Americans have one of these diseases.
Ankylosing spondylitis belongs to a group of diseases known as spondyloarthropathies. Between three and 13 out of 1,000 Americans have one of these diseases.