Dissociative Disorders

Dissociative disorders are characterized by an involuntary escape from reality characterized by a disconnection between thoughts, identity, consciousness and memory. People from all age groups and racial, ethnic and socioeconomic backgrounds can experience a dissociative disorder.

Its estimated that 2% of people experience dissociative disorders, with women being more likely than men to be diagnosed. Almost half of adults in the United States experience at least one depersonalization/derealization episode in their lives, with only 2% meeting the full criteria for chronic episodes.

The symptoms of a dissociative disorder usually first develop as a response to a traumatic event, such as abuse or military combat, to keep those memories under control. Stressful situations can worsen symptoms and cause problems with functioning in everyday activities. However, the symptoms a person experiences will depend on the type of dissociative disorder that a person has.

Treatment for dissociative disorders often involves psychotherapy and medication. Though finding an effective treatment plan can be difficult, many people are able to live healthy and productive lives.


Symptoms and signs of dissociative disorders include:

  • Significant memory loss of specific times, people and events
  • Out-of-body experiences, such as feeling as though you are watching a movie of yourself
  • Mental health problems such as depression, anxiety and thoughts of suicide
  • A sense of detachment from your emotions, or emotional numbness
  • A lack of a sense of self-identity

The symptoms of dissociative disorders depend on the type of disorder that has been diagnosed. There are three types of dissociative disorders defined in the Diagnostic and Statistical Manual of Mental Disorders (DSM):

  • Dissociative Amnesia. The main symptom is difficulty remembering important information about one’s self. Dissociative amnesia may surround a particular event, such as combat or abuse, or more rarely, information about identity and life history. The onset for an amnesic episode is usually sudden, and an episode can last minutes, hours, days, or, rarely, months or years. There is no average for age onset or percentage, and a person may experience multiple episodes throughout her life.
  • Depersonalization disorder. This disorder involves ongoing feelings of detachment from actions, feelings, thoughts and sensations as if they are watching a movie (depersonalization). Sometimes other people and things may feel like people and things in the world around them are unreal (derealization). A person may experience depersonalization, derealization or both. Symptoms can last just a matter of moments or return at times over the years. The average onset age is 16, although depersonalization episodes can start anywhere from early to mid childhood. Less than 20% of people with this disorder start experiencing episodes after the age of 20.
  • Dissociative identity disorder. Formerly known as multiple personality disorder, this disorder is characterized by alternating between multiple identities. A person may feel like one or more voices are trying to take control in their head. Often these identities may have unique names, characteristics, mannerisms and voices. People with DID will experience gaps in memory of every day events, personal information and trauma. Onset for the full disorder at can happen at any age, but it is more likely to occur in people who have experienced severe, ongoing trauma before the age of 5. Women are more likely to be diagnosed, as they more frequently present with acute dissociative symptoms. Men are more likely to deny symptoms and trauma histories, and commonly exhibit more violent behavior, rather than amnesia or fugue states. This can lead to elevated false negative diagnosis.


Dissociative disorders usually develop as a way of dealing with trauma. Dissociative disorders most often form in children exposed to long-term physical, sexual or emotional abuse. Natural disasters and combat can also cause dissociative disorders.


Doctors diagnose dissociative disorders based on a review of symptoms and personal history. A doctor may perform tests to rule out physical conditions that can cause symptoms such as memory loss and a sense of unreality (for example, head injury, brain lesions or tumors, sleep deprivation or intoxication). If physical causes are ruled out, a mental health specialist is often consulted to make an evaluation.

Many features of dissociative disorders can be influenced by a person’s cultural background. In the case of dissociative identity disorder and dissociative amnesia, patients may present with unexplained, non-epileptic seizures, paralyses or sensory loss. In settings where possession is part of cultural beliefs, the fragmented identities of a person who has DID may take the form of spirits, deities, demons or animals. Intercultural contact may also influence the characteristics of other identities. For example, a person in India exposed to Western culture may present with an “alter” who only speaks English. In cultures with highly restrictive social conditions, amnesia is frequently triggered by severe psychological stress such as conflict caused by oppression. Finally, voluntarily induced states of depersonalization can be a part of meditative practices prevalent in many religions and cultures, and should not be diagnosed as a disorder.


Dissociative disorders are managed through various therapies including:

  • Psychotherapies such as cognitive behavioral therapy (CBT) and dialectical behavioral therapy (DBT)
  • Eye movement desensitization and reprocessing (EMDR)
  • Medications such as antidepressants can treat symptoms of related conditions

Related Conditions

Because dissociative disorders appear on the trauma spectrum, many patients may have conditions associated with trauma, as well as additional trauma-based conditions.