What is COPD?Chronic Obstructive Pulmonary Disease or COPD is a mix of two diseases which are chronic bronchitis and emphysema. In both these diseases there is chronic hindrance of the flow of air through the lungs and airways. The obstruction is permanent and increases over a period. Asthma is also a disease in which there is hindrance to the flow of air through the lungs. But unlike chronic bronchitis and emphysema, the intermittent time between the ‘attacks’ of asthma, the flow of air through the airway is usually good and there is no inconvenience.
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