What is the difference between a panic attack and a heart attack?

Panic attacks: Panic attacks are psychologic reactions which can have symptoms which mimic those of heart attack. A real heart attack is caused by a heart blood vessel blocking off and damaging a part of the heart. Heart attack can be fatal. Panic attack usually isn't fatal but can be psychologically incapacitating.

One is due: To nervousness and the other due to lack of blood flow to heart muscle.