What conditions can be diagnosed with ankylosing spondylitis

Ankylosing spondylitis is a reason not yet clear, the main lesion to the spine chronic disease, characterized by almost all involved sacroiliac joints, often in the vicinity of disc annulus fibrosus and ligament calcification and bone ankylosis, causing bending Disorders , and may have a different degree of ocular, cardiovascular, kidney, and other organ damage. Late in the regular juvenile onset or early adulthood, after the age of 40, the incidence is very rare. When you are in the hospital, was diagnosed as ankylosing spondylitis, your heart may still in doubt, now you tell us what conditions can a diagnosis of ankylosing spondylitis. Conditions are as follows: (1) low back pain, morning stiffness at least three months, easing campaign, rest when no improvement; (2) of lumbar flexion, extension, lateral bending activities in the direction of three limited; (3) Section 4 Jinjianxi level measurement thorax week Drive, inspiratory and expiratory activities of the margin is less than 2.5 cm; (4) the specificity of the sacroiliac joint radiology (X-ray) changes.