<unk><unk>  is an inflammatory disease that in overtime it causes some of  the vertebrae in your spine to fuse.Because of the fusion the spine less flexible and the patients present with hunched-forward posture. It can be difficult to breathe deeply when the ribs are involved.The most common cause of<unk><unk>  is involvement of gene HLA B27.
Ankylosing spondylitis causes
Rheumatoid arthritis causes
Bursitis causes
Sjögren's syndrome causes
Osteoarthritis causes
Septic arthritis causes
Dermatomyositis causes
Osteomyelitis causes