How to say "人格分裂"or"雙重人格" and"疑神疑鬼"in English?
A symptom like always think about someone wants to kill him, two personalities in a body.

Question

Answer

人格分裂 ~= split personality
雙重人格 ~= multiple personalities

I'm not a psychologist, so I can't really tell you the clinical difference between the two terms. I'm just giving the translation. After reading a few articles, it seems that there is very little clinical difference between a split personality disorder and a multiple personality disorder. They are both referred to as "dissociative disorders", the new fancy term for these things.

疑神疑鬼 ~= extremely suspicious

Answer

人格分裂：Dissociative Disoders；多重人格：Multiple-personality Disorders；

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