What illness causes a person to lose the ability to breathe easily?

Chronic obstructive pulmonary disease (COPD) is an illness that can cause a person to lose the ability to breathe easily. This progressive lung disease, often caused by long-term exposure to irritants like cigarette smoke, leads to airflow obstruction and breathing difficulties. Other conditions, such as Asthma or pulmonary fibrosis, can also impair breathing and contribute to respiratory distress. Early diagnosis and management are essential for improving quality of life.