Female, 53, Episodes Of Extreme Sweating On Head, Extremely Nausea

Female, 53, episodes of extreme sweating on head, extremely nausea lasts about 1 hour then gone! Dripping sweat I'm talkin, body hot, nausea is extreme! I just clench up close eyes lay down and pray it passes. Not blood sugars, went to ER after happened yesterday but sat for 7 hours then they gave a quick ecg and labs were Cbc and BMP. THEN SENT HOME. Blood pressure was a bit high and said there was a pvc. Told to go to family dr. This has happened about 8 times about a month or so apart but sometimes a few a month. No one listens or believes u when u ask is it heart? Can u do the enzyme tests to rule it out since I'm here? Nothing