I have normal pulse 72 to 90 for 2 to 3 days ,then pulse will go up to appx. 150 for around 12 hours; going to the gym ,working out & using the whirlpool will make pulse go up to 150 & stay there for appx. 12 hours
Also wake up with dry mouth, & when standing get lightheaded
Is there a diagnosis for this & a medicine for it