The next listing includes some clinical problems (not exhaustive) typically connected with chronic pain: Sexually transmitted infections: sexually transmitted infections like Chlamydia or gonorrhoea may lead to reactive arthritis in some cases. Ankylosing spondylitis: also referred to as axial spondyloarthritis, is really a form of arthritis that causes inflammation within the joints ... https://www.theorthopaedicandpainpractice.com/joint-pain-what-causes-it-and-what-are-some-treatments-offered/