Summary: Your body's immune system protects you from disease and infection. But if you have an autoimmune disease, your immune system attacks healthy cells in your body by mistake. Autoimmune diseases can affect many parts of the body and there are more than 80 types of autoimmune diseases, and some have similar symptoms! Learn how "diseases" such as RA, Chronic Fatigue Syndrome, Fibromyalgia, Ankylosing Spondylitis, Hashimoto's, Interstitial Cystitis and many more are all related in some way or another!
