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A popular myth has grown around the use of WD-40 as a joint lubricant and pain reliever for arthritis. The liquid is sprayed on the painful joint much as one would fix a squeaky mechanical hinge.
Rheumatoid arthritis (RA) causes inflammation, pain, and swelling of joints. Corticosteroids like prednisone are good at reducing inflammation.By doing this, prednisone reduces the swelling and stiffness in the joints affected by RA. This also helps to ease the pain.heumatoid arthritis (RA) causes inflammation, pain, and swelling of joints. Corticosteroids like prednisone are good at reducing inflammation.