One difference between a panic attack and typical anxiety is that an attack is defined as a “sudden surge” of anxiety and fear. In other words, you might be fine one minute, and then a trigger sets off an episode. An example of a trigger prior to having a panic attack would be being in an elevator that was becoming increasingly crowded as it progressed up a building for a claustrophobic individual. Another example of a trigger for a panic attack could be the physical sensation of drinking too much coffee leading to a faulty belief system that a heart attack was imminent.
Panic attacks may not necessarily lead to the diagnosis of a panic disorder, and what caused an anxiety episode once may not cause one again. For example, a person who’s afraid of bees may panic when one chases him, but not during a visit to a botanical garden or museum exhibit on insects. On the other hand, someone with a deep-seated phobia can experience anxiety every time she is exposed to the phobic stimuli. If you had childhood trauma in an emergency room for instance, you may experience mild to moderate panic disorder every time you visit your doctor.