you get breathing that becomes shallow and you feel as if you cant breathe, then you get the heart palpitations that feels as if you heart is beating off rythem. then after you are exausted and shaky. its a very scary thing, i am now on some medicine for it and it is starting to control it.
And If your having one, you will know. If anyone knows of any good medication for this, can they let me know please, because my prescribed meds made it so much more regular than it was, didn't work at all. try asking your docter for xanax time released or even the imediate release but hes prolly gonna give you that clonazapam its made to prevent attacks and its in the benzopine family