Thank you for inviting me, the rheumatism symptoms you mentioned may be joint pain and discomfort, causing joint pain in many diseases, such as rheumatoid arthritis, osteoarthritis, gout, ankylosing spondylitis, psoriatic arthritis, lupus erythematosus, dry syndrome, scleroderma and other rheumatoid immune diseases, and the presence of a positive rheumatoid factor is only a diagnostic rheumatoid arthritis criteria, and not every rheumatoid arthritis patients have a positive. Not every rheumatoid arthritis patient has a positive rheumatoid factor. Therefore, it is possible to have joint symptoms and a negative rheumatoid factor. This means that joint symptoms do not necessarily mean rheumatoid arthritis, and there are many other types of arthritis. I hope this helps!

Hello! There is a type of "seronegative rheumatoid arthritis" that is symptomatic of a negative rheumatoid factor. However, depending on what symptoms you have, many joint lesions have symptoms such as joint swelling, pain and discomfort.