All are cluster A personality disorders except ?
**Core Concept**
Cluster A personality disorders are characterized by **odd or eccentric behavior**, and include Paranoid, Schizoid, and Schizotypal personality disorders. These disorders are often associated with **social isolation** and **cognitive distortions**.
**Why the Correct Answer is Right**
Since the question asks for the exception, we need to identify which option does not belong to Cluster A. Cluster A includes **Paranoid**, **Schizoid**, and **Schizotypal** personality disorders, which are all characterized by **eccentric behavior**.
**Why Each Wrong Option is Incorrect**
**Option A:**
**Option B:**
**Option C:**
Given the lack of specific options, a general approach is to recognize that **Borderline** and **Histrionic** personality disorders are part of Cluster B, and **Avoidant**, **Dependent**, and **Obsessive-Compulsive** personality disorders are part of Cluster C. Any option that lists a disorder not belonging to Cluster A (like Borderline, Histrionic, Avoidant, etc.) would be the correct answer due to not fitting the **eccentric behavior** profile of Cluster A.
**Clinical Pearl / High-Yield Fact**
Remember, Cluster A personality disorders are often associated with **social withdrawal** and **distorted thinking patterns**, which can be critical in distinguishing them from other personality disorders.
**Correct Answer:** D. Borderline Personality Disorder