<unk>  arthritis is usually idiopathic but genetic factors like HLA-DR4 cluster, environmental like smoking, hormonal like hyperprolactinemia, immunologic, infectious factors like mycoplasma, epstein-Barr virus (EBV), rubella virus, porphyromonas gingivalis, socioeconomic, psychological, and lifestyle factors such as obesity also play an important role in the development of<unk>  arthritis.
Rheumatoid arthritis causes
Sjögren's syndrome causes
Septic arthritis causes
Ankylosing spondylitis causes
Psoriatic arthritis causes
Monoarticular arthritis causes
Psoriatic arthritis risk factors
Drug-induced lupus erythematosus causes