Panic attack (or episodic paroxysmal anxiety) is a subtype of anxiety disorder, which refers to neurotic level disorders associated with stress. A panic attack is represented by a well-defined episode of intense anxiety or malaise, which comes on suddenly, reaches a maximum within a few minutes and lasts no more than 10 to 20 minutes, and also suddenly disappears.A panic attack can be either an independent disease or in the frame of any disorder...