Is this question multiplc choice or open-ended? Anyways, I'll give you some ideas.
-Chronic obstructive pulmonary disease, a disease that gets worse over time and causes wheezing, shortness of breath, chest tightness, and other symptoms.
-Pneumonia
-Chronic Bronchitis, which causes swelling of the lining of your bronchial tubes. When this happens, less air flows to and from your lungs.