flare chronic obstructive pulmonary disease copd past year cough produces colored abundant sputum usual smoke cigarettes chronic obstructive pulmonary disease copd diagnosed gastroesophageal reflux cough traveled country last 4 weeks noticed wheezing sound exhale
bronchitis acute copd exacerbation / infection pneumonia bronchospasm / acute asthma exacerbation bronchiectasis
Acute COPD exacerbation / infection