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Mirrored-self misidentification is the delusional belief that one's reflection in the mirror is another person – typically a younger or second version of one's self, a stranger, or a relative. [1] This delusion occurs most frequently in patients with dementia [ 2 ] and an affected patient maintains the ability to recognize others' reflections ...
Clonal pluralization of the self, where a person believes there are multiple copies of themselves, identical both physically and psychologically, but physically separate and distinct. [11] Clinical lycanthropy is the belief that one is turning or has turned into an animal. It is considered a delusional misidentification of the self. [12]
Mirrored-self misidentification: the belief that one's reflection in a mirror is some other person. Reduplicative paramnesia: the belief that a familiar person, place, object, or body part has been duplicated. For example, a person may believe that they are, in fact, not in the hospital to which they were admitted, but in an identical-looking ...
The Capgras delusion is classified as a delusional misidentification syndrome, a class of beliefs that involves the misidentification of people, places, or objects. [2] It can occur in acute, transient, or chronic forms. Cases in which patients hold the belief that time has been "warped" or "substituted" have also been reported. [3]
The first patient with symptoms of Capgras syndrome, another delusional misidentification syndrome, was reported in 1923 by Joseph Capgras and Jean Reboul-Lachaux. This patient, however, also experienced the delusion of subjective doubles, [15] but the appearance of doubles of the self were not addressed until Christodoulou's article in 1978. [6]
Validation rather than clinical condemnation of ideas of reference is frequently expressed by anti-psychiatrists, on the grounds, for example, that "the patient's ideas of reference and influence and delusions of persecution were merely descriptions of her parents' behavior toward her."
There is an association in the literature between misidentification syndromes and violent or aggressive behavior. [3] [5] [6] [7] In several case studies, individuals with misidentification syndromes acted aggressively towards the object of misidentification, which has the potential for criminal behavior.
Research by Feinberg, et al. has shown that significant deficits in executive and memory functions follow shortly after damage in the right frontal or left temporoparietal areas. Tests performed on patients that have had a brain injury revealed that basic attention ability and visuomotor processing speed are typically normal.