"According to medical records from Fushen Pingyuan's psychiatrist, he had previously suffered from a mild case of dissociative identity disorder. Childhood memory triggers could be the underlying cause, and familial migraines, along with life stress, further amplified the impact of his condition."
The doctor sighed and said, "Generally speaking, the personalities inside a person with multiple personality disorder are independent and autonomous, existing as a complete self. At any given time, only one core personality can control the body. Under psychological stress, they might suddenly switch to a completely different identity, completely forgetting their previous self—which is to say, they switch to another personality. And when they switch back to the original core personality, the core personality is utterly unaware of what happened during the period of the second personality.
