delusional misidentification syndrome https://en.wikipedia.org/wiki/Delusional_misidentification_syndrome https://www.wikidata.org/wiki/Q2460356 An umbrella term, introduced by Christodoulou (in his book The Delusional Misidentification Syndromes, Karger, Basel, 1986) for a group of delusional disorders that occur in the context of mental and neurological illness. They all involve a belief that the identity of a person, object, or place has somehow changed or has been altered. As these delusions typically only concern one particular topic, they also fall under the category called monothematic delusions. delusional misidentification syndromes ictal delusional misidentification syndrome delusional syndrome