What is the medical term for rheumatiod arthritis?

Ankylosing spondylitis is one of a sevral arthritic diseases called "spondyloarthropathies."

Inflammation In this disease causes:

Swelling

Stiffness in the joint between the pelvic bones (the ilium) and the wedge-shaped bone at the base of the spine (the sacrum)

Pain

Difficulty moving

Ankylosing spondylitis can also cause inflammation of the eyes, lungs, and heart valves.