Which disorder is characterized by persistent episodes of depersonalization?

The disorder characterized by persistent episodes of depersonalization is indeed Depersonalization/Derealization Disorder. This disorder is specifically defined in the DSM-5-TR by the recurrent experiences of feeling detached from one's body or mental processes (depersonalization) or experiencing the world around them as unreal (derealization).

Individuals with this disorder often report feeling as though they are outside observers of their thoughts, feelings, or body, which can lead to significant distress and impairment in their daily functioning. The defining feature of this disorder is the persistent nature of these episodes, which distinguishes it from other dissociative conditions.

In contrast, Dissociative Amnesia primarily involves an inability to recall autobiographical information, usually related to a traumatic or stressful event, rather than experiencing depersonalization. Dissociative Identity Disorder includes the presence of two or more distinct personality states, which is quite different from just persistent depersonalization experiences. Somatic Symptom Disorder is focused on the presence of physical symptoms that cause significant distress or impairment, with no relation to depersonalization.

Thus, the clear and defining characteristic of Depersonalization/Derealization Disorder makes it the correct answer for this question, as it best captures the essence of persistent depersonalization episodes.