Spondylitis, Ankylosing |
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| Bechterew's Disease; Ankylosing Spondylitides; Ankylosing Spondylitis; Bechterews Disease; Disease, Bechterew; Disease, Bechterew's; Disease, Marie-Struempell; Marie Struempell Disease; Rheumatoid Spondylitides; Spondylitides, Ankylosing | |
| The form of rheumatoid arthritis affecting the spine. It occurs predominantly in young males and produces pain and stiffness as a result of inflammation of the sacroiliac, intervertebral, and costovertebral joints. Etiology is unknown. | |