Approximately 7% of adults with asthma and 14% of adults with severe asthma have aspirin-exacerbated respiratory disease (AERD), a chronic disorder of the immune system. Our free practical guide examines how AERD is diagnosed, managed and treated and includes compelling patient testimonials so you can gain a better understanding of the disease. Resources include our AERD infographic and a sample letter to send to healthcare professionals about aspirin therapy. The guide was reviewed by leading AERD health professionals.