Panic attacks are episodes of intense fear that last only a short while. On the other hand, anxiety comes on more gradually, is less intense, and lasts longer. Panic attacks are the body’s natural reaction to feared or dangerous situations, this is explained in more depth in this Panic Away Review. However, sometime an attack occurs in error when there is no real danger. Panic attacks are the most extreme manifestation of panic disorder , an anxiety response resulting from an over-production and under-use of adrenalin, the bodily chemical which cause them. When the anxiety reaction has no use for adrenalin, this powerful hormone can create a group of physical reactions which can peak with the formation of a panic attack.