What is a key difference between asthma and chronic obstructive pulmonary disease (COPD)?

Asthma is typically characterized by its reversibility, meaning that symptoms can often be alleviated with appropriate treatment and management, such as bronchodilators and anti-inflammatory medications. In contrast, chronic obstructive pulmonary disease (COPD) is considered a progressive condition that leads to a gradual decline in lung function and is generally not reversible—once lung damage occurs, it usually cannot be entirely undone.

Additionally, asthma is frequently associated with allergic triggers, such as allergens from pollen, pets, or dust mites, which can induce bronchospasms and inflammation in the airways. This relationship with allergies is a hallmark of asthma and distinguishes it from COPD, which is primarily related to long-term exposure to harmful substances, notably cigarette smoke, pollution, and occupational irritants.

While both conditions affect individuals of various ages, asthma is often diagnosed in children and can persist into adulthood, whereas COPD typically manifests in adults, especially those with significant smoking history. Therefore, the customary association of asthma with reversibility and allergy underscores the correct choice.