DSM-5 moved PTSD from the anxiety disorders category to a new diagnostic class. What is this new category and which disorder shares this classification?

• A Obsessive-compulsive and related disorders; body dysmorphic disorder
• B Dissociative disorders; depersonalisation/derealisation disorder
• C Somatic symptom and related disorders; illness anxiety disorder
• D Trauma- and stressor-related disorders; acute stress disorder and adjustment disorders ✓

Explanation

A major DSM-5 structural change was the creation of the 'Trauma- and Stressor-Related Disorders' chapter, separating PTSD, acute stress disorder, adjustment disorders, reactive attachment disorder, and disinhibited social engagement disorder from the anxiety disorders chapter. This reorganisation acknowledged that trauma-related disorders encompass mood, dissociative, and arousal symptoms beyond simple fear/anxiety. The new grouping better reflects shared aetiological mechanisms (exposure to traumatic or stressful events).

Reference: Kaplan & Sadock's Synopsis of Psychiatry, 11th ed.

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