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It was once believed that many more men than women get ankylosing spondylitis (AS), but recent studies suggest the ratio of men to women is actually about two to three men for every woman, or 2-3:1.
Conditions beyond the joints (also called "extra-articular manifestations") may appear in patients with AS.
Get the Ankylosing Spondylitis Wellness Book with recipes, symptom trackers for doctor visits, and more helpful resources via email.
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