Extreme, rapid-onset fear. A normal response to crisis situations, but panic attacks can be pathological when they occur without warning or reason in an anxious individual.
Example: A fortysomething man presents with chest pain, palpitations, sweats, and normal cardiac enzymes soon after his father’s heart attack.
Grinnell, R. (2008). Panic. Psych Central. Retrieved on May 30, 2016, from http://psychcentral.com/encyclopedia/panic/