What is one difference between asthma and COPD?

Asthma is primarily characterized by its reversible nature; individuals with asthma can often achieve normal lung function between episodes of wheezing or shortness of breath. This reversibility is a hallmark indicator of asthma and can typically be restored with bronchodilator use or spontaneously during periods without triggers. On the other hand, Chronic Obstructive Pulmonary Disease (COPD) is usually progressive and not fully reversible, meaning that while symptoms can be managed, the underlying lung function decline cannot be completely reversed.

The other options present misconceptions about the conditions. Asthma can affect individuals of any age, including children, which contradicts the idea that it only affects adults. Moreover, both asthma and COPD can exhibit overlapping symptoms such as wheezing and respiratory distress, so the assertion that there is no symptom overlap is incorrect. Lastly, both conditions may require medication for management, with asthma often treated using inhalers and COPD requiring a broader management plan, but it does not imply that only COPD necessitates medication.