fugue state

1. A psychiatric dissociative state characterized by an altered state of consciousness, during which a person loses their memory and often wanders away from their home. When he was finally recovered, Tom had no memory of where he had been or where he lived. The hospital's psychiatric team diagnosed him as having experienced a fugue state. Specialists believe that the missing man is experiencing a fugue state and likely does not remember where he lives. I don't know how much information you'll be able to get out of her, Officer. If she was indeed in a fugue state, she won't remember the last several days.

2. An intensely preoccupied, disconnected, or unfocused state of mind. Sorry, I was so sleep-deprived that slipped into a fugue state there for a while. What were you asking me again? Good luck getting Helen's attention—she seems to fall into a fugue state when she's painting. I was so panicked by the announcement of layoffs that I fell into a something of a fugue state and didn't hear anything else the CEO said.