diagnosed hyperthyroidism severe chronic obstructive pulmonary disease copd feel slightly dizzy lightheaded high blood pressure take medications treat high blood pressure known heart defect feel heart beating fast racing irregularly missing beat feel palpitations feel heart beating irregularly disorganized pattern traveled country last 4 weeks symptoms increased physical exertion alleviated rest
atrial fibrillation psvt anemia scombroid food poisoning
Atrial fibrillation