The most common causes of joint pain are joint inflammation, joint tumors and tuberculosis, bacterial infection, trauma, etc., as follows: 1. Joint inflammation: Patients with rheumatoid arthritis, rheumatoid arthritis, gouty arthritis, synovitis, osteoarthritis, joint strain and autoimmune diseases, such as lupus erythematosus, may lead to the existence of significant joint pain symptoms. 2. 2. joint tumors and tuberculosis: may also lead to significant pain in the joints. 3. bacterial infection: may cause septic arthritis, which may also lead to significant pain in the joints. 4. trauma: may cause joint capsule damage, ligament damage, cartilage damage, fracture, dislocation, etc., which may also lead to significant swelling, pain and other symptoms in the joints.