Hi, Chronic obstructive pulmonary disease (COPD) is a lung disease that worsens in time, it makes it difficult for the patient to breathe. The main cause of COPD is long-term exposure to irritants that damage the lungs and airways, such as cigarette smoke, air pollution, and occupational dust and chemicals. COPD is characterized by two main conditions: chronic bronchitis and emphysema. Chronic bronchitis is a condition where the airways in the lungs become inflamed and narrowed, causing excess mucus production and coughing. This can lead to difficulty breathing, especially when there is increased mucus production or inflammation in the airways. Emphysema is a condition where the air sacs in the lungs are damaged, reducing the amount of oxygen that can be absorbed into the bloodstream. This can also lead to difficulty breathing, especially during physical activity or when there is a lack of oxygen in the air. In addition to the underlying lung disease, there can be several triggers that worsen symptoms of COPD and make breathing more difficult. These can include: - Exposure to air pollution, such as car exhaust or industrial pollutants - Infections, such as the flu or pneumonia - Changes in temperature and humidity - Allergies or irritants, such as smoke, dust, or strong odors - Stress and anxiety - Physical exertion or exercise It is important to work with a healthcare provider to manage COPD symptoms and identify any triggers that may be exacerbating difficulty breathing. Treatment options may include medication, oxygen therapy, pulmonary rehabilitation, and lifestyle changes such as quitting smoking and avoiding triggers. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Priyanka, General & Family Physician