Definite cause of ankylosing spondylitis remains unknown, although genetic alterations seem to be involved. People who have the HLA-B27 gene are at a greatly increased risk of developing ankylosing spondylitis. However, other contributing factors are certain infections and exposure to particular substances. Men are more likely to develop ankylosing spondylitis than are women while onset generally occurs in late adolescence or early adulthood.
Opportunity to get money at ufabet