My son has been to the dr office and ER this week. This is his third episode of high heart rate , BP low or drops when standing, blurry vision , short of breath, white around lips , reddish skin. He walks up a flight of stairs and it sounds like he s playing In a ball game. He can t walk and talk without being short of breath. Being reddened to cardiology . All his labs and X-rays were good. When he left hospital ER hr wad 120 laying 140 standing after 5-mins came down to 128.