**Core Concept**
Anankastic personality disorder is a psychiatric condition characterized by a pervasive pattern of perfectionism, rigidity, and control, leading to excessive self-control and orderliness. This disorder is now more commonly referred to by a different name due to changes in psychiatric classification systems.

**Why the Correct Answer is Right**
The correct answer is related to the change in nomenclature in the Diagnostic and Statistical Manual of Mental Disorders (DSM). The DSM has undergone revisions over the years, and anankastic personality disorder is now referred to by a different name. This change is due to the increasing recognition of the overlap between different personality disorders and the need for more accurate and descriptive terminology.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately reflect the current name of anankastic personality disorder.
**Option B:** This option is incorrect because it is a different personality disorder, characterized by excessive emotional expressiveness and a need for approval.
**Option C:** This option is incorrect because it is a type of anxiety disorder, not a personality disorder.
**Option D:** This option is incorrect because it is not a recognized term in psychiatric classification systems.

**Clinical Pearl / High-Yield Fact**
It's essential for clinicians to stay up-to-date with the latest changes in psychiatric classification systems to ensure accurate diagnosis and treatment of patients. The DSM is regularly revised to reflect new research and clinical findings, and clinicians should be aware of these changes to provide the best possible care.

**Correct Answer:** D. Obsessive-Compulsive Personality Disorder.