Arthritis is a common/an widespread/frequent condition/disorder/ailment that causes pain/discomfort/aches in the joints/bones/limbs. It can occur/develop/arise due to/as a result of/from wear and tear/injury/inflammation. The exact causes/root causes/origins are not always clear/obvious/known, but factors/influences/elements such as age/genetics/li

Rheumatoid arthritis is a chronic/represents/presents itself as autoimmune disease that causes inflammation in the joints. This condition/state/disorder can lead to/results in/manifests with pain, stiffness, and swelling/inflammation/edema in the affected joints. The symptoms/manifestations/signs of rheumatoid arthritis vary/differ/fluctuate from