diagnosed hyperthyroidism known issue heart valves experiencing shortness breath difficulty breathing significant way significantly overweight compared people height feel slightly dizzy lightheaded heart attack angina chest pain known heart defect 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