severe chronic obstructive pulmonary disease copd experiencing shortness breath difficulty breathing significant way flare chronic obstructive pulmonary disease copd past year chronic obstructive pulmonary disease copd diagnosed gastroesophageal reflux work agriculture work mining sector traveled country last 4 weeks noticed wheezing sound exhale
acute pulmonary edema anaphylaxis guillain-barré syndrome atrial fibrillation myocarditis acute copd exacerbation / infection pulmonary embolism acute dystonic reactions myasthenia gravis anemia scombroid food poisoning psvt sle
Acute COPD exacerbation / infection