Delusionism - Causes

Causes

See also: Psychosis (causes)

To define delusional thinking in a specific patient, it is important to consult a local psychiatrist who can make a thorough examination before diagnosing the problem. Explaining the causes of delusions continues to be challenging and several theories have been developed. One is the genetic or biological theory, which states that close relatives of people with delusional disorder are at increased risk of delusional traits. Another theory is the dysfunctional cognitive processing, which states that delusions may arise from distorted ways people have of explaining life to themselves. A third theory is called motivated or defensive delusions. This one states that some of those persons who are predisposed might suffer the onset of delusional disorder in those moments when coping with life and maintaining high self-esteem becomes a significant challenge. In this case, the person views others as the cause of their personal difficulties in order to preserve a positive self-view.

This condition is more common among people who have poor hearing or sight. Also, ongoing stressors have been associated with a higher possibility of developing delusions. Examples of such stressors are immigration or low socio-economic status.

Researcher, Orrin Devinsky, MD, from the NYU Langone Medical Center, performed a study that revealed a consistent pattern of injury to the frontal lobe and right hemisphere of the human brain in patients with certain delusions and brain disorders. Devinsky explains that the cognitive deficits caused by those injuries to the right hemisphere, results in the over compensation by the left hemisphere of the brain for the injury, which causes delusions.

A study carried out by a team from The Warwick Medical School at the University of Warwick, Coventry, England, led by Andrea Schreier, Ph. D., indicated that children who suffered bullying are more likely to develop psychotic symptoms in early adolescence. The background facts demonstrated that hallucinations and delusions are common in childhood as well as in adulthood and that children who experience such symptoms are more prone to develop psychosis later in life. Furthermore, the study demonstrated that the risk of psychotic symptoms, including delusions, was multiplied by two for children who suffered bullying at age eight or ten. The authors remark that bullying can cause chronic stress that may have an effect on a genetic predisposition to schizophrenia and result in setting off the symptoms.

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