diagnosed hyperthyroidism severe chronic obstructive pulmonary disease copd experiencing shortness breath difficulty breathing significant way diabetes feel slightly dizzy lightheaded feel heart beating fast racing irregularly missing beat feel palpitations traveled country last 4 weeks symptoms increased physical exertion alleviated rest
atrial fibrillation psvt myocarditis scombroid food poisoning acute dystonic reactions anaphylaxis anemia pulmonary embolism
Atrial fibrillation