Actually, the spasms can be very much like the type of pains of a real heart attack. During true cardiac vasospasms, the arteries partially collapse in this process and the pain you feel is from the restrction for just seconds at a time (repeated though) as the vessels flex back & forth. It's not long enough for complete 'blockage' of the vessles, but it will mimic the same type of pain since it is the same type of process. It can even cause the radiation down left side, and in the jaw, back, neck, etc.

It is logical to have more problems during cold temps, since there is more constriction of vessels at this time. I have defintely had more during winter months as well.

ALL chest pain needs to be evaluated from a cardiac standpoint first. After typical cardiac problems are ruled out, then autonomic testing can be done.