Asthma and COPD Overlap Syndrome: What It Really Means
💡TL;DR: Asthma–COPD overlap (ACOS) means you have features of both asthma and COPD; it’s not a new disease, but it’s often more severe than either alone (American Lung Association). Most people are 40+ with variable wheeze plus fixed airflow limitation; ACOS patients experience exacerbations about 4–