&chief_complaint=Low back pain and stiffness with pain and swelling of involved peripheral joints with no skin rash

&phys_exam=Tenderness unilateral sacroiliac joint and tenderness and swelling of involved peripheral joints

&cor_dif=Reactive Arthritis,

&incor_dif=Sjogrens Syndrome,Ankylosing Spondylitis,Generalized Osteoarthritis,

&review=presentation and differential diagnosis of Spondyloarthropathy