Brief Answer:
It is a disease that is autoimmune in nature.

Detailed Answer:
Hello,
Thanks for your query.

Ankylosing spondylitis is a disease that is autoimmune in nature. It affects mainly spine and at sites of major tendon attachment at heel and knee. Just like various chronic diseases like diabetes, hypertension and Ischemic heart disease are not curable but controllable. Ankylosing spondylitis is also controllable. With proper medication and exercises you can lead an absolutely normal life without any pain or disability.

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