Which phenomenon involves a sense of detachment from one's self?

The phenomenon of depersonalization involves a sense of detachment from one's self, where an individual may feel as if they are observing their thoughts, feelings, or actions from a distance, or feel outside of their body. This experience can be disorienting, leading to a perception that one’s self is unreal or altered in some way. It often occurs in the context of stress, anxiety, or traumatic experiences.

In contrast, derealization pertains to a sense of detachment or unreality concerning one’s surroundings rather than oneself. Self-alteration is not a commonly recognized term in psychiatry and does not specifically refer to a detachment experience. Dissociative amnesia involves a failure to recall personal information, usually related to traumatic or stressful events, but does not specifically denote a sense of detachment from self. Thus, the distinct characteristic of a feeling of detachment from one's self aligns exclusively with depersonalization.