What this kind of experience looks like
There are gaps in your experience that are hard to explain. You find yourself somewhere and don’t quite know how you got there. You come back to yourself mid-conversation, mid-task, mid-day, and realise that something was happening but you were not quite in it. Sometimes it is small: a few minutes, a mild sense of unreality, the feeling of watching yourself from a slight distance. For some people it is larger: hours, whole episodes that belong to an inner world with its own logic that the rest of you cannot access.
Depersonalisation is the sense of being outside your own experience: watching yourself act, speak, feel, without being fully inside it. Derealisation is the sense that the world outside is not quite real, that it has a quality of flatness or dream. Both are ways the self has learned to create distance between itself and something it could not process while being fully present to it.
For many people in this territory, there is not one unified experience of the self. There are different states: moods, voices, ways of being, that do not quite know about each other. Not a dramatic fracture, usually. More like a self that holds multiple registers that rarely meet, that learned very early to keep certain things in separate rooms so that the person could continue functioning.
