## Core Concept
Panic attacks are discrete periods of intense fear or discomfort that reach a peak within minutes and include symptoms such as palpitations, sweating, trembling, shortness of breath, feeling of choking, and fear of losing control or dying. These episodes are a key feature of panic disorder, a type of anxiety disorder. The diagnosis and characterization of panic attacks involve a specific set of criteria, including the presence of at least four of the above-mentioned symptoms.

## Why the Correct Answer is Right
The correct characterization of a panic attack involves specific symptoms that reach a peak within minutes. These symptoms can include a rapid heartbeat, sweating, trembling or shaking, sensations of shortness of breath or smothering, feeling of choking, chest pain or discomfort, nausea or abdominal distress, dizziness, lightheadedness, derealization (feelings of unreality), fear of losing control or going crazy, fear of dying, paresthesias (numbness or tingling sensations), and chills or hot flashes.

## Why Each Wrong Option is Incorrect
- **Option A:** Typically, panic attacks do involve intense fear or discomfort.
- **Option B:** Symptoms such as palpitations, sweating, and trembling are common, making this option a characteristic of panic attacks.
- **Option C:** Shortness of breath and fear of losing control are also typical symptoms.
- **Option D:** This option would need to be evaluated based on the specifics provided, but generally, panic attacks are characterized by a rapid onset and resolution of symptoms.

## Clinical Pearl / High-Yield Fact
A key clinical pearl is that panic attacks can occur unexpectedly (unexpected panic attacks) or in situations that remind the person of a previous panic attack (situationally bound panic attacks). Additionally, panic attacks can be triggered by specific stimuli, such as certain places or situations, which can lead to the development of agoraphobia in some individuals.

## Correct Answer: D.