The exact cause of depersonalization-derealization disorder is not known.
It is believed to be caused by changes in the levels of neurotrasnmitters that can increase stress and fear.
This in turn can laed to depersonalization-derealization disorder.
Other causes may include:
Childhood trauma or abuse
Growing up with a mentally ill parent
Suicide or unexpected death of a relative or close friend
Severe stress like relatioship, financial or work-related problems
4 Making a Diagnosis
For the diagnosis of depersonalization-derealization disorder patients must meet the criteria of symptoms in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). The DSM-5 is published by the American Psychiatric Association.
The DMS-5 includes the following definitions:
Having a feeling of being detached thoughts, emotions or body.
Feeling detached from the environment, as it would appear in a dream.
In order for depersonalization-derealization disorder to be diagnosed:
The patient should persistent experiences of symptoms of depersonalization, derealization or both.
The patient should be aware that the experience is not real
Symptoms interfere with the day-to-day activities of the patient.
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