Which of the following disorders is not related to obsessive-compulsive disorder?

• A. Panic disorder
• B. Body dysmorphic disorder
• C. Trichotillomania (hair-pulling disorder)
• D. Hoarding disorder

Answer: (A)

Verified step by step guidance

1. Step 1: Understand the nature of Obsessive-Compulsive Disorder (OCD) and its related disorders. OCD is characterized by obsessions (intrusive thoughts) and compulsions (repetitive behaviors). Related disorders often share similar features such as repetitive behaviors or preoccupations.
2. Step 2: Identify disorders that are classified under the Obsessive-Compulsive and Related Disorders category in the DSM-5. These include Body Dysmorphic Disorder, Trichotillomania (hair-pulling disorder), and Hoarding Disorder, all of which involve repetitive behaviors or preoccupations similar to OCD.
3. Step 3: Examine Panic Disorder, which is classified under Anxiety Disorders rather than Obsessive-Compulsive and Related Disorders. Panic Disorder primarily involves sudden episodes of intense fear or discomfort (panic attacks) without the repetitive thoughts or behaviors characteristic of OCD.
4. Step 4: Compare the symptoms and classification of each disorder to determine which one does not share the core features or classification with OCD and its related disorders.
5. Step 5: Conclude that Panic Disorder is not related to OCD in terms of classification and symptomatology, whereas Body Dysmorphic Disorder, Trichotillomania, and Hoarding Disorder are considered related to OCD.