I went to a&e yesterday and I constantly feel faint and dizzy more so when I'm walking and standing still but it also happens occasionally when I'm sat up, doctors speculate pots as when I stand my heart rate shoots up to 130/140 but when I'm sat it goes back under 100 - however what worries me is that I'm symptomatic all the time!!! It doesn't matter if my heart rate is low or high I'm always symptomatic except when lying down :/ this is making me think what if it isn't pots and it's something else....can anyone please tell me if you can be symptomatic with a normal heart rate with pots? :( also I suffer everyday, there's not a day that has gone by since august where I haven't been faint, I had a holter monitor which also showed these abnormal spikes.