What mental illness does fight club have?

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4. What is the mental illness in Fight Club?
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6. Is there a sequel to Fight Club?
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Tags

1. #disorder
2. #identity
3. #person
4. #effects
5. #little
6. #dissociative
7. #homicidal
8. #itself
9. #concentration
10. #extremes
11. #personalities
12. #balancing
13. #comical
14. #typecast
15. #causes