“…The number of reported cases of OPK coexisting with rheumatic diseases is increasing. Rheumatic diseases reported in patients with OPK include reactive arthritis 15 ) , rheumatoid arthritis 16 ) , juvenile arthritis 2 ) , discoid lupus erythematosus, spondyloarthritis 1 , 5 , 6 ) , psoriatic arthritis 17 ) , Raynaud phenomenon 1 ) , antiphospholipid syndrome, livedoid vasculitis, undifferentiated connective tissue disease 18 ) , familial Mediterranean fever 5 , 19 ) , fibromyalgia 3 , 20 ) , myofascial pain syndrome 3 ) , adhesive capsulitis 11 ) , spinal stenosis 7 , 8 , 9 ) , and De Quervain syndrome 21 ) .…”