[wrinklytidbits]

I highly doubt it's a Fugue state.

>Unlike retrograde amnesia (which is popularly referred to simply as "amnesia", the state where someone forgets events before brain damage), dissociative amnesia is not due to the direct physiological effects of a substance (e.g., a drug of abuse, a medication, DSM-IV Codes 291.1 & 292.83) or a neurological or other general medical condition (e.g., amnestic disorder due to a head trauma, DSM-IV Codes 294.0).[7] It is a complex neuropsychological process.

The portion you quoted is part of the criteria that excludes an episode from being labeled a Fugue state.