Have you recently experienced a persistent cough, worsening phlegm, or breathless gasping after walking just a short distance? If these symptoms persist for at least three months across two consecutive years, you should suspect chronic obstructive pulmonary disease, or COPD, rather than a simple cold. COPD is a condition in which chronic inflammation develops in the lungs primarily due to smoking, air pollution, or exposure to toxic gases, leading to progressive damage in the airways and lung tissue.
COPD largely manifests in two forms: chronic bronchitis and emphysema. Chronic bronchitis involves persistent inflammation of the inner lining of the bronchus, causing excessive mucus secretion and airway narrowing. Emphysema refers to a state where the walls of the pulmonary alveolus are destroyed, losing elasticity and impeding the gas exchange necessary for respiration. These two conditions often occur together.
The frequent cough and phlegm presenting as symptoms are caused by inflammatory responses in the airways and excessive mucus production. In particular, many people experience severe coughing and sticky phlegm in the morning. Dyspnea, or shortness of breath, occurs because hypofunction of the lung prevents adequate oxygen inhalation and carbon dioxide exhalation. While it initially appears only when climbing stairs or exercising, it can progress into a severe condition where one becomes breathless even during daily activities. Hoarseness or a turbid voice may also accompany this, as laryngeal irritation from chronic cough or airway inflammation can affect vocal cord function.
The autonomic nervous system also plays an important role in the progression and exacerbation of COPD. Chronic stress resulting from lung hypofunction can cause hyperactivation of the sympathetic nerve, raising heart rate and blood pressure while further fueling inflammatory responses. In addition, an unbalanced autonomic nervous system affects the constriction and relaxation of the bronchus, aggravating dyspnea. Although COPD is a progressive disease with no complete cure, early diagnosis, appropriate treatment, and lifestyle improvements can slow its progression and sufficiently improve quality of life. Therefore, do not leave it unattended, and be sure to consult a medical specialist.
