Epidural spinal injection side effects for ankylosing spondylitis?

Side effect: No special side effects because of the ankylosing spondylitis.

No difference: Epidural injections can be done to relieve pain and inflammation from a number of spinal conditions; risks are the same. Tenderness at the injection site is common but doesn't last long. More serious problems such as bleeding, infection, or nerve damage are very rare but possible; these injections should only be done by trained physicians.