Welcome, everyone. I'm Dr. John Whyte, the chief medical officer at WebMD. Ankylosing spondylitis is a type of arthritis that causes pain and stiffness in your spine. It usually starts in your ...

A diagnostic delay of 2 to 6 years may be typical in axSpA, noted Raj Sengupta, MBBS, of the University of Bath in England, ...

Doctors use a number of different names for ankylosing spondylitis. Each one describes a phase or stage of the disease. As you manage your ankylosing spondylitis, the last thing you need is for ...

Another tool is a pulmonary function test, which measures your breathing and how well your lungs are working. In one study, 25 percent of people with ankylosing spondylitis had abnormal lung ...