Home > Medical > COPD > About COPD About COPD All sections in COPD » About COPD » COPD and Medication » FAQs » Living with COPD » COPD News » Smoking » The Lungs Emphysema - from Natural Standard Emphysema is a chronic (long lasting) condition in which the walls between the alveoli (air sacs) within the lung lose their ability to stretch and recoil, causing shortness of breath. Chronic obstructive pulmonary disease (COPD) - from Natural Standard Chronic obstructive pulmonary disease (COPD) is a type of lung disease that involves damage or obstruction to the airways of the lungs, making it difficult to breathe. Chronic obstructive pulmonary disease (COPD) Chronic obstructive pulmonary disease (COPD) is a chronic lung disease. It is characterised by obstruction of airflow that cannot be fully reversed. Symptoms include breathing difficulty, cough, sputum production and wheezing. Subscribe to the Newsletter » Join us on Facebook » Ask Stop Smoking Expert » Ask CyberDoc » Anti-Tobacco Art Adenovirus Adenoviruses are medium-sized (90 to 100 nanometers) viruses that contain double-stranded deoxyribonucleic acid (DNA). DNA consists of two strands of a series of nucleotides shaped like a twisted ladder. This structure is referred to as a double helix, and it contains an individual's genetic code. Emphysema-like disease and HIV Emphysema is an incurable condition that occurs when the walls between the air sacs in the lung lose their ability to stretch and recoil, causing shortness of breath. Some HIV patients develop a condition called emphysema-like disease, which causes similar symptoms. The main difference between these two conditions is that abnormal masses in the lungs, called cystic lesions, cause symptoms of emphysema-like disease. load more articles advertisement From our sponsors Sun protection for all children Understanding your sunscreen The science behind cosmeceuticals Do you know these 5 facts about skincare?