Epidemiology of Dry Eye Autoimmune Disease Rates upwards of 20% were seen across nine common autoimmune diseases other than Sjögren's, most often in rheumatoid arthritis (39.3%) with Crohn's disease bringing up the rear (23.0%), according to Chi-Chin Sun, MD, PhD, of Chang Gung https://t.co/Z8ZBGmqT93