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double insanity
double insanity Historically, double insanity meant a form of communicated or shared mental disorder involving two people, such as a pair who come to show the same delusions or hallucinations.
Historically, double insanity meant a form of communicated or shared mental disorder involving two people, such as a pair who come to show the same delusions or hallucinations. In this usage, one person’s disturbed beliefs may influence the other, or both may become affected from a common cause and then intensify each other’s condition through sympathy and imitation.