Fregoli delusion

Fregoli delusion

Fregoli delusion is a psychological disorder that causes the person suffering from it to hold a delusional belief that every person he or she meets is in fact a single person who changes appearance or is in disguise. This disorder is usually caused by a brain lesion and it often has a paranoid nature, with the patient suffering from it believing that they are going to be persecuted by the person they believe is in disguise.

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