Iatrogenic

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Iatrogenic refers to

a) A system was made by other people convincing them they were a system. They weren't a system previously but after people started telling them they were they believed them which led to them actually forming a system.

b) A system formed through therapy. This could be through internal family systems therapy, their therapist convincing them they're a system and them believing them or if they were abused in therapy and had to form a system to deal with it.

c) A reclamation of a term they've had used against them.