feel anxious pain reason consulting characterize pain: feel pain intense pain pain radiate location precisely pain located fast pain consume energy drinks regularly regularly take stimulant drugs experiencing shortness breath difficulty breathing significant way feel slightly dizzy lightheaded feel lightheaded dizzy feel like faint feel heart beating fast racing irregularly missing beat feel palpitations traveled country last 4 weeks recently taken decongestants substances may stimulant effects
psvt atrial fibrillation anemia anaphylaxis pulmonary embolism panic attack guillain-barré syndrome cluster headache scombroid food poisoning acute dystonic reactions chagas
PSVT