Dissociative disorders are so-called because they are marked by a dissociation from or interruption of a person's fundamental aspects of waking consciousness (such as one's personal identity, one's personal history, etc.). Dissociative disorders come in many forms, the most famous of which is dissociative identity disorder (formerly known as multiple personality disorder). All of the dissociative disorders are thought to stem from trauma experienced by the individual with this disorder. The dissociative aspect is thought to be a coping mechanism -- the person literally dissociates himself from a situation or experience too traumatic to integrate with his conscious self.

The causes of dissociative identity disorder have not been identified, but are theoretically linked with the interaction of overwhelming stress, insufficient childhood nurturing, and an innate ability to dissociate memories or experiences from consciousness.Prolonged childhood abuse is frequently a factor, with a very high percentage of patients reporting documented abuse often confirmed by objective evidence.

Dissociative disorders come in many forms, the most famous of which is dissociative identity disorder ( formerly known as multiple personality disorder ). All of the dissociative disorders are thought to stem from trauma experienced by the individual with this disorder. The dissociative aspect is thought to be a coping mechanism -- the person literally dissociates himself from a situation or experience too traumatic to integrate with his conscious self. Symptoms of these disorders, or even one or more of the disorders themselves, are also seen in a number of other mental illnesses, including post-traumatic stress disorder, panic disorder, and obsessive compulsive disorder.

People with dissociative disorders chronically escape their reality in involuntary, unhealthy ways ranging from suppressing memories to assuming alternate identities. The patterns of dissociative disorders usually develop as a reaction to trauma and function to keep difficult memories at bay. Up to 7 percent of the U.S. population may experience a dissociative disorder in their lifetime.

Memory loss that's more extensive than normal forgetfulness and can't be explained by a physical or neurological condition is the hallmark of this condition. Sudden-onset amnesia following a traumatic event, such as a car accident, happens infrequently. More commonly, conscious recall of traumatic periods, events or people in your life ? especially from childhood ? is simply absent from your memory.

This disorder is characterized by a sudden sense of being outside yourself, observing your actions from a distance as though watching a movie. It may be accompanied by a perceived distortion of the size and shape of your body or of other people and objects around you. Time may seem to slow down, and the world may seem unreal. Symptoms may last only a few moments or may wax and wane over many years.

A mental health professional makes a diagnosis of a dissociative disorder by taking a careful personal history from the client/patient and family members. It is important that the therapist learn the details of the person's life. No laboratory tests are required to make a diagnosis of dissociative disorder nor are there any physical conditions that must be met. However, it is very important not to overlook a physical illness that might mimic or contribute to a psychological disorder. If there is any question that the individual might have a physical problem, the mental health professional should recommend a complete physical examination by a medical doctor. Laboratory tests might be necessary as a part of the physical workup.