Are all rheumatic diseases auto immune disease s or is there a difference in the 2. If there different what is the difference clinically?

More than a 100 kind. Over 100 different kinds of arthritis and related diseases (rheumatic diseases) some metabolic, gout and pseudogout. Some genetic (hemochromatosis) many autoimmune, your immune system reacts against part of your body. Most common rheumatoid arthritis. There are autoimmune diseases that do not cause arthritis, ms, penphigus.