Fregoli delusion In Fregoli delusion, the person has a delusional belief that different people are in fact a certain other people, even if there is no physical resemblance. We consider Fregoli syndrome a form of delusional misidentification "in which the false identification of familiar people occurs in strangers". Copyright Notice Adapted from Wikipedia. Text is available under the  Creative Commons Attribution-ShareAlike License 3.0 ; additional terms may apply.