Can anyone tell me what causes me to out of the blue once in a while, I get a hot feeling all over, and it is scary, like I think it is is a stroke, but a few minutes later, I am ok again, but scared that it was a bad sign that something is wrong. I asked my doc over the phone after describing the symptoms what it was, only to be told She did not know. Is there anyone here that have had this happen to them? How do I treat it if possible?