What is a common symptom of a panic attack?

A panic attack is characterized by a sudden onset of intense fear or discomfort that reaches its peak within minutes. One of the hallmark features of a panic attack is the presence of physical symptoms, including but not limited to chest pain, rapid heartbeat, sweating, trembling, shortness of breath, and feelings of impending doom. These physical manifestations can mimic serious medical conditions, which is often why individuals experiencing a panic attack may mistakenly believe they are having a heart attack or other health crisis.

The physical sensations of panic can be overwhelming and frightening, leading to the immediate feeling of losing control. This aligns perfectly with the nature of a panic attack, where the body reacts as if it is in immediate danger, triggering a "fight or flight" response.

Other symptoms mentioned in the options, such as behavioral avoidance of triggers, inability to concentrate on everyday tasks, and persistent worry about the future, can be related to anxiety disorders in general but are not specifically indicative of a panic attack. These symptoms are often associated with generalized anxiety or phobias rather than the acute nature of panic attacks. The focus on physical symptoms like chest pain distinctly captures the essence of what occurs during a panic attack, reinforcing the correct choice in this question.