diagnosed hyperthyroidism known issue heart valves experiencing shortness breath difficulty breathing significant way diabetes feel slightly dizzy lightheaded heart attack angina chest pain known heart defect feel heart beating irregularly disorganized pattern traveled country last 4 weeks symptoms increased physical exertion alleviated rest
atrial fibrillation myocarditis pulmonary embolism psvt anemia sle epiglottitis guillain-barré syndrome croup bronchospasm / acute asthma exacerbation scombroid food poisoning acute dystonic reactions myasthenia gravis anaphylaxis sarcoidosis chagas
Atrial fibrillation