What causes Delusional Misidentification Syndrome?
It is understood that the common neurological deficit that usually underlies all of these syndromes is a lesion in the right hemisphere of the brain.(Woods, 2009) Similarly, it is widely recognized that frontal lobe pathology, disconnection, and/or dysfunction between these areas and/or other areas of the brain critical to memory, recognition, and familiarity also play a large part in setting the stage for DMS. It can also be seen that there is a psychological influence that contributes to the development of these delusions. They may be found in connection with a wide array of both organic and psychiatric diseases and disorders ranging from schizophrenia and bipolar depression to stroke and dementia. They can present themselves in either a chronic or a transient way.
Several means have been used to manage the DMS delusions. For an in depth discussion of treatment options that have been used effectively to treat Reduplicative Paramnesia in particular, some of which may be helpful to combat other DMS delusions as well, you may wish to review my copyrighted article entitled “Reduplicative Paramnesia – its Shades & Features”.
Woods, Lauren. 2009. Delusions associated with consistent pattern of brain injury. NYU Langone Medical Center/New York University School of Medicine. Public release date: 1/13/2009 New York University School of Medicine. Available from: http://www.eurekalert.org/pub_releases/2009-01/nlmc-daw011309.php