Depersonalization/Derealization Disorder
Depersonalization is a feeling of detachment or unreality in relation to the self, while derealization is about a similar feeling about the environment. One may feel as if one is observing oneself from the outside or as if the world is dreamy, dull or 'behind glass'.
In Depersonalization/Derealization Disorder the experiences are persistent or repetitive and cause substantial distress or difficulty. A crucial feature is that reality testing remains intact: the person knows that the sensation does not mean that the world has really ceased to exist.
What Is Depersonalization/Derealization Disorder?
Depersonalization may involve thoughts, feelings, body or actions: emotional numbing, feeling automatic, distorted perception of time or the body not being familiar. In derealization, people and objects appear lifeless, flat, distant, or unusually clear or blurry. Brief such experiences can occur under intense fatigue or stress and are not in themselves a disorder. They need persistence or repetition, discomfort or impairment and exclusion of another cause.
Key Features and Signs
People often struggle to describe the experience and may report:
- Feeling that they are watching themselves, their thoughts, or their actions from a distance.
- Emotional or physical numbness and feeling like they are operating "like a robot".
- The body or parts of it look foreign, disfigured or of a different size.
- The environment looks dreamy, colourless, flat, far away or behind a veil.
- Altered sense of time and difficulty experiencing memories as personal experiences.
- Repeatedly checking whether the self or the world is 'real', fearing brain damage or loss of reason.
How It Is Diagnosed
Clinical assessment examines episode pattern, duration and triggers, reality testing, substance use, sleep, and medical and psychiatric history.
- There are persistent or recurrent experiences of depersonalization, derealization, or both.
- Reality testing remains intact during these experiences, even when the sensations are highly convincing or frightening.
- Symptoms cause significant distress or difficulty in social, work, or other functioning.
- The disturbance is not attributable to a substance, medication, seizure disorder, or another medical condition and is not better explained by schizophrenia, Panic Disorder, Major Depressive Disorder, Acute Stress Disorder, PTSD, or another dissociative disorder.
How It Can Affect Daily Life
Constantly feeling disconnected can make it difficult to concentrate, work, drive, have relationships, and enjoy activities. The fear that the experience is permanent can lead to repeated self-examination, internet searches, and a greater focus on symptoms. Anxiety and depression often co-occur and need separate care. Despite the feeling of unreality, the person is not "faking it" and the symptoms are real.
Causes and factors associated
There is no single psychogenic explanation. Intense stress, traumatic experiences, panic, depression, lack of sleep, hyperstimulating environments, and certain substances have been associated with onset or exacerbation. The relationship varies from person to person and does not prove causation in every case. When the onset occurs later in life or is accompanied by new neurological signs, a particularly careful medical investigation is needed.
Similar or Co-occurring Conditions
The whole intact reality testing and the overall context are central:
- In a psychotic disorder, a person may hold a fixed belief that the self or environment has literally changed, without recognising the experience as a subjective sensation.
- During a panic attack, depersonalization may occur only during the attacks; a separate diagnosis is not made unless an independent pattern is present.
- In Posttraumatic Stress Disorder or acute stress disorder, dissociation is part of a wider reaction to a traumatic event.
- Substances, medications, epilepsy, migraine, sleep problems and other medical conditions need evaluation.
- Brief experience in meditation or cultural practice is not a disorder when it is controlled and does not provoke impairment.
Treatment and Support
Treatment is individualised and often combines explanation, psychotherapy and care for co-occurring conditions.
- Clearly explaining that intact reality testing is maintained can reduce the fear of "madness" or permanent brain damage.
- Psychotherapy may help reduce persistent symptom monitoring and repeated checking of one’s sense of self.
- Grounding techniques, such as focusing on specific sensory cues and the present, may help some people without being a stand-alone treatment.
- Depression, panic, PTSD, sleep problems or substance use are treated with appropriate interventions.
- There is no drug with a specific and guaranteed effect on the disorder; each treatment is a matter of individualised clinical decision.
When to Seek Help
Seek evaluation when the feeling of disconnection persists, recurs, frightens you, or makes it difficult for you to work, have relationships, drive, or take care of yourself. New onset after a substance, head injury, seizure, severe headache, or along with fainting, weakness, confusion, or loss of reality testing needs immediate medical evaluation.
Frequently Asked Questions
Does depersonalization mean I'm losing touch with reality?
In this particular disorder, no. The person recognizes that this is a sensation and not a literal change of the world or self. If this recognition is missing, another assessment is needed.
Can it be caused by cannabis or another substance?
Yes. Substances can cause such symptoms in some people. The temporal relationship is then assessed, and an independent disorder is not diagnosed when the substance better explains the presentation.
Will the symptoms definitely go away with treatment?
Many people get better, but it cannot be guaranteed and the course varies. Treatment aims to reduce symptoms, fear and functional burden.