Panic attack is associated with a disturbance in all of the following neurotransmitters except:
**Core Concept**
A panic attack is a sudden episode of intense fear or discomfort that reaches a peak within minutes and includes symptoms such as palpitations, sweating, trembling, shortness of breath, feelings of choking, and nausea or abdominal distress. The pathophysiology of panic attacks involves an imbalance of neurotransmitters in the brain.
**Why the Correct Answer is Right**
Panic attacks are associated with disturbances in serotonin (5-HT), dopamine, and norepinephrine levels. Serotonin is involved in regulating anxiety and mood, while dopamine is associated with emotional processing and reward. Norepinephrine is involved in the body's fight-or-flight response. The imbalance of these neurotransmitters can lead to the symptoms characteristic of a panic attack.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because GABA (gamma-aminobutyric acid) is an inhibitory neurotransmitter that helps to calm down the nervous system. While GABA is involved in anxiety regulation, it is not directly associated with the pathophysiology of panic attacks.
* **Option B:** This option is incorrect because glutamate is an excitatory neurotransmitter that can contribute to anxiety and stress. However, it is not the primary neurotransmitter involved in panic attacks.
* **Option C:** This option is incorrect because acetylcholine is involved in various physiological processes, including muscle contraction and the regulation of the autonomic nervous system. While it may play a minor role in anxiety regulation, it is not directly associated with panic attacks.
**Clinical Pearl / High-Yield Fact**
To remember the neurotransmitters involved in panic attacks, recall the "SAD" acronym: Serotonin (5-HT) is involved in anxiety and mood regulation, Dopamine is associated with emotional processing, and Norepinephrine is involved in the fight-or-flight response.
**Correct Answer: C. Acetylcholine. Acetylcholine is not directly associated with panic attacks.**