Ankylosing spondylitis (AS) is a rare type of arthritis that causes pain and stiffness in your spine.

Doctors use a number of different names for ankylosing spondylitis. Each one describes a phase or stage of the disease.

The way ankylosing spondylitis (AS) progresses, or changes over time, can be different for different people.

As you manage your ankylosing spondylitis, the last thing you need is for medical expenses to take you by surprise.

Not everyone develops all of the following symptoms of ankylosing spondylitis, arthritis of the spine.

Ankylosing spondylitis causes pain and stiffness, mainly in your spine. It can also cause eye inflammation called uveitis.

When the inflammation of ankylosing spondylitis reaches your chest, it can inflame the joints in your ribs.

Diffuse idiopathic skeletal hyperostosis and ankylosing spondylitis are types of arthritis. There are a few key differences.

Doctors don’t know what causes ankylosing spondylitis. Both your genes and your environment are thought to play a role.

Ankylosing spondylitis affects about 1% of the U.S. population, or an estimated 3.2 million people.

Ankylosing spondylitis can be tough to diagnose. Its symptoms are similar to those of many other conditions.

Though ankylosing spondylitis is thought to be most common in white men, the disease also affects women and Black people.

When it's time to see a specialist for ankylosing spondylitis (AS), you'll make an appointment with a rheumatologist.

You'll likely meet several different types of doctors and medical specialists who will care for your ankylosing spondylitis.

Ankylosing spondylitis therapies offer ways to manage pain, ease or slow the damage to joints, and treat other symptoms.

Experts continue to find new data about the possible causes and treatment options for ankylosing spondylitis.

Participating in an ankylosing spondylitis clinical trial can be beneficial, but they're not always a good fit for everyone.

In ankylosing spondylitis, your immune system produces inflammation. DMARDs calm your immune system to relieve pain.