I'm a little confused about Thyroid symptoms. For instance today I have had Adrenalin pumping through my whole body the entire day, even though Im dead tired. My heart beats so fast it feels like Im gonna have a heart attack and then I get cold. Ive had the heartbeat problem for about twenty years even when I was well. I once went into intensive care cos it was 238 beats a minute. They offered me Beta blockers but I refused. Ive had it on and off through the last few years even when Ive been well and its weird cos sometimes it starts when I do something like reach up. It will just kind of go banf, start going really fast , then totally aout of rythmn, then eventually bang back to normal. It makes me cough a lot. The only other symptoms I had when I was well was always cold feet and hands and if I got really tired ringing in the ears and frequent urination with kidney pain. but to me they were just normal to me ,so I lived with them and was 99% well. Sorry gone a bit off track but could this be a thyroid problem does anyone know and if it is , is it under or overactive. Thanks Tracy