<unk><unk>  (AS), a spondyloarthropathy, is a chronic, multisystem inflammatory disorder involving primarily the sacroiliac (SI) joints and the axial skeleton. The outcome in patients with a spondyloarthropathy, including AS, is generally compared with that in patients with a disease such as rheumatoid arthritis.Mostly the joints where the spine joins the pelvis are also affected.Back pain is one of the most prominent symptoms of the<unk><unk>  (AS) which is intermittent in nature.Stiffness in the affected joints gets worse.It is believed that both the combination of genetic and environmental factors play an important role in the pathogenesis of<unk><unk>  (AS) and the underlying etiology is believed to be autoimmune or autoinflammatory.
Ankylosing spondylitis pathophysiology
Bursitis pathophysiology
Rheumatoid arthritis pathophysiology
Osteoarthritis pathophysiology
Septic arthritis pathophysiology
Vertebral osteomyelitis pathophysiology
Polymyalgia rheumatica pathophysiology
Osteomyelitis pathophysiology