Rheumatoid arthritis can cause pain, swelling and deformity. As the tissue that lines your joints (synovial membrane) becomes inflamed and thickened, fluid builds up and joints erode and degrade. Rheumatoid arthritis is a chronic inflammatory disorder that can affect more than just your joints.
If it is an autoimmune disease like Rheumatoid Arthritis, then it can be stopped in most cases by diet. Same as for gout. But it will not reverse permanent damage.
Flashback Friday: Why Do Plant-Based Diets Help Rheumatoid Arthritis? | NutritionFacts.org