An idiosyncratic belief or impression maintained despite being contradicted by reality or rational argument, typically as a symptom of mental disorder.” This disease is defined as beliefs that conflict with reality.

Associated conditions of delusions:

Here are given some of the conditions that involve delusions.

➤              Delusional disorder                                              

➤              Brief psychotic disorder

➤              Schizophoenia

➤              Schizopherniform disorder

➤              Bchizo affective disorder

➤              Substance/ medication-induced psychotic disorder

➤              Mood disorder

➤              Postpartum psychosis

➤              Dementia

➤              Parkinson’s disease

➤              Delusional symptoms

➤              In partner of individual with delusional disorder.

Types of delusions:

There are different types of delusions. There are explained below. These types are determined through the themes of delusions that are usually experienced.


In this type of delusion individual thinks that a person is in love with him and show her love through different gestures and the person who is showing love in on higher social standing.


In this type of delusion the person that is suffering from this disease thinks that he has extraordinary talent, fame, power and wealth.


This is a condition in which the patient believes that he is being, cheated, spied on, drugged, followed and slandered in some ways.


This situation is a dangerous situation in which a partner thinks that the other one is cheating on him and meeting her old lover.


In this condition patients believe that they are experiencing and facing some physical sensations or bodily dysfunctions under the skin. Like a man thinks that a parasite is living in his body.

Mixed or unspecified:

When two or more types of delusions and their symptoms mixed together then it is called mixed or unspecified delusion.

Common delusions:

The most common delusions are the persecutory delusions and in this type of delusions the theme of being followed, harassed, cheated, poisoned or drugged, conspired against, spied on, attacked are included.

Delusion in psychology:

According to psychology “a delusion is a belief that is clearly false and that indicated an abnormality in the effected person’s context of thought.”

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Symptoms of delusional disorder:

Irritability, angry, low mood and hallucinations like seeing, hearing, feelings those things that does not exist. These symptoms are related with delusions. One of the most common and obvious symptoms of delusional disorder is non-bizarre delusions.

Cause of Delusions:

Here are given some of the causes of Delusions. The exact cause of Delusional disorder is not known yet.

Genetic: one of its causes is genetics. There is more risk of this disease if it is found in the family members of that person.

Biological: biological reasons are one the reason of Delusions in which part of brain that control perception and thinking became abnormal and these parts do not work normally.

Environmental/ Psychological: stress is one of the causes of Delusional disorder. Stress is a trigger of Delusional disorder. Some other environmental reasons are alcohol and drug abuse.

Diagnosis of Delusional Disorder:

For the diagnose of this serious disease and diagnostic test hold by doctor to disease. Full physical examination is required for the diagnosis of this disease. Some of the symptoms on the basis diagnostic test could be held and these symptoms are

➤              Alzheimer’s disease

➤              Epilepsy

➤              Obsessive-compulsive disorder

➤              Delirium

➤              Other Schizophrenia spectrum disorder

But if no physical reason occurs for this disease then psychiatrist diagnose this mental illness.

➤              This diagnosis is made on the basis of these symptoms.

➤              If the person is suffering from one then an delusions and for more than one month

➤              If the person is not the patient of Schizophrenia.

➤              If there is no other mental illness

➤              If manic or major depressive episodes occur.

Treatment of Delusional Disorder:

This disorder can be treated by following treatments.

Conventional Antipsychotics: this treatment is also called neuroleptics, and this is a very old way of treatment of mental illness.

Atypical Antipsychotics: they are the newer drugs that are used for mental illness and specifically Delusional disorder

Other Medications: use of sedatives and anti-depressants for treating Delusions, even tranquilizers is also used for its treatment.


To conclude, I can say that Delusion is a serious type of mental illness. There are many reasons of this mental illness and many treatments are also available for curing this disease.