diagnosed hyperthyroidism known issue heart valves experiencing shortness breath difficulty breathing significant way significantly overweight compared people height feel heart beating irregularly disorganized pattern traveled country last 4 weeks symptoms increased physical exertion alleviated rest
atrial fibrillation psvt guillain-barré syndrome panic attack myocarditis scombroid food poisoning acute dystonic reactions myasthenia gravis anaphylaxis sle chagas
Atrial fibrillation