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Types of Delusional Disorder

Capgras Delusion
Capgras Delusion

Capgras delusion is a psychiatric disorder in which a person holds a delusion that a friend, spouse, parent, or other close family member (or pet) has been replaced by an identical impostor.

Clinical Lycanthropy
Clinical Lycanthropy

Clinical lycanthropy is a rare condition and is largely considered to be an idiosyncratic expression of a psychotic episode caused by another condition such as schizophrenia, bipolar disorder or clinical depression.

Cotard Delusion
Cotard Delusion

Cotard delusion is a rare mental illness in which the affected person holds the delusional belief that they are already dead, do not exist, are putrefying, or have lost their blood or internal organs.

Delusional Parasitosis
Delusional Parasitosis

Delusional parasitosis, also known as delusional infestation or Ekbom's syndrome, is a delusional disorder in which individuals incorrectly believe they are infested with parasites, insects, or bugs, whereas in reality no such infestation is present.

Erotomania
Erotomania

Erotomania may be a symptom of a psychiatric illness, including schizophrenia, schizo-affective disorder, major depressive disorder with psychotic features, bipolar disorder, or Alzheimer's disease. Erotomania is a type of delusional disorder. Other types include delusions of persecution, grandiosity, or jealousy.

Fregoli Delusion
Fregoli Delusion

The Fregoli delusion, or the delusion of doubles, is a rare disorder in which a person holds a delusional belief that different people are in fact a single person who changes appearance or is in disguise.

image: prezi.com
Monothematic Delusion
Monothematic Delusion

A monothematic delusion is a delusional state that concerns only one particular topic. This is contrasted by what is sometimes called multi-thematic or polythematic delusions where the person has a range of delusions (typically the case of schizophrenia).

image: quazoo.com
Morgellons
Morgellons

Morgellons disease is a delusional disorder that leads to the belief that one has parasites or foreign material moving in, or coming out of, the skin. Morgellons disease is a little-known disorder that is often associated with nonspecific skin, nerve, and psychiatric symptoms.

Paranoia
Paranoia

Delusional disorder, previously called paranoid disorder, is a type of serious mental illness called a "psychosis" in which a person cannot tell what is real from what is imagined. The main feature of this disorder is the presence of delusions, unshakable beliefs in something untrue or not based on reality.

source: webmd.com
Reduplicative Paramnesia
Reduplicative Paramnesia

Reduplicative paramnesia is the delusional belief that a place or location has been duplicated, existing in two or more places simultaneously, or that it has been 'relocated' to another site.

image: quazoo.com