COPD is mainly caused by smoking which irritates the lungs and causes them to become inflamed which can lead to scarring. When the inflammation builds up usually over some years, the walls of the airways thicken and more mucus is produced causing the patient to cough and produce phlegm. The persistent cough and phlegm is a main symptom of COPD. Another symptom is increased breathlessness even when carrying out daily activities such as climbing steps. COPD could also result in frequent
COPD is mainly caused by smoking which irritates the lungs and causes them to become inflamed which can lead to scarring. When the inflammation builds up usually over some years, the walls of the airways thicken and more mucus is produced causing the patient to cough and produce phlegm. The persistent cough and phlegm is a main symptom of COPD. Another symptom is increased breathlessness even when carrying out daily activities such as climbing steps. COPD could also result in frequent