Emphysema is a long-term inflammatory condition of the lower respiratory airways,generally triggered by frequent exposure to irritating cigarette smoke,polluted air,or allergens.

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Emphysema is a long-term, progressive disease of the lungs that primarily causes shortness of breath due to over-inflation of the alveoli (air sacs in the lungs). It is a type of chronic obstructive pulmonary disease (COPD) mainly caused by long-term exposure to cigarette smoke and other irritants, rather than being an inflammatory condition of the lower respiratory airways.

Emphysema Is a Long-Term Inflammatory Condition of the Lower Respiratory