World Autoimmune Autoinflammatory Arthritis Day

World Autoimmune Autoinflammatory Arthritis Day is observed annually on May 20.

The day raises global awareness about autoimmune and autoinflammatory arthritis diseases, such as rheumatoid arthritis, juvenile idiopathic arthritis, psoriatic arthritis, and ankylosing spondylitis. These are systemic, often invisible illnesses that can cause significant disability if not treated properly.