Ankylosing spondylitis (AS) is a type of chronic (long-term) arthritis that affects parts of the spine, including bones, muscles and ligaments.
Our Health A-Z contains more information on Ankylosing spondylitis.
Sciatica is the name given to any sort of pain caused by irritation or compression of the sciatic nerve.
Our Health A-Z contains more information on Shooting pain down back of leg.
Important: If you have these symptoms, they may be unrelated to any of these conditions listed. If you are concerned about your symptoms then you should see a doctor.