Step 1: Concept Identification:
The objective is to determine which conditions from the provided list are categorized under the "Anxiety Disorders" chapter of the DSM-5.
Step 2: Condition Analysis:
Evaluation of each option against DSM-5 classifications:
A. Depression: Classified under "Depressive Disorders" (e.g., Major Depressive Disorder), not Anxiety Disorders.
B. Social Phobia: Renamed "Social Anxiety Disorder" in DSM-5 and is a core diagnosis within the "Anxiety Disorders" chapter.
C. Panic disorder: A primary diagnosis in the "Anxiety Disorders" chapter, defined by recurrent, unexpected panic attacks.
D. Generalized anxiety disorder (GAD): Another key diagnosis in the "Anxiety Disorders" chapter, characterized by persistent, excessive worry.
Consequently, Social Anxiety Disorder (formerly Social Phobia), Panic Disorder, and Generalized Anxiety Disorder fall under the anxiety disorders category.
Step 3: Conclusion:
The applicable conditions are B, C, and D.