Dissociative Identity Disorder (which is also known as multiple personality disorder) is a condition where two or more separate and distinct personality states control the person’s behavior. It is a condition affected in one’s memory, consciousness, or self-identity. A Person who is under control of one identity is usually unable to remember some of the events that occurred while other personalities were in control. The different identities may show differences in speech, attitudes, thoughts, and differences in gender or in physical properties such as allergies and right-or-left handedness. A few signs or symptoms are feeling like more than one person, encountering people that call you another name, having blackouts not knowing where you are or how you got there, and not recognizing yourself in the mirror. Dissociative Identity Disorder can be caused by repeated episodes of physical or sexual abuse in childhood. It can also be caused by extreme stress and trauma that occurs during important periods of development during childhood. No one knows how this disorder really occurs, but these are just the ones that are the most researched. One treatment option is psychotherapy with hypnosis. The therapist will ask to make contact with as many as possible and to understand their roles and functions in the person’s life. Another option for treatment is drug therapy. It helps relieve some coexisting symptoms, such as anxiety or depression. Psychiatric hospitalization may be helpful to help the person through difficult times. Some drugs for drug therapy that will help this order are antidepressants, depressants, stimulants, antipsychotic medication, and anxiety medication. People might ask how one can live with this disorder. They are normal people that can do your everyday task, like work, play, and interact normally in society but with good control of themselves. If they take the correct medications, they can live more normally. There is no evidence that a person with this disorder is more violent or dangerous to others than any other mental illness. There are three types of dissociative disorder. The first one is dissociative identity disorder, which is talked about in the beginning. The second one is dissociative amnesia. It is connected to overwhelming stress. Which may be caused by traumatic events such as war, abuse, accidents, or disasters. The person either has suffered the trauma or just witnessed it. Also, important personal information would be hard to recall. It may usually be caused from a traumatic or a stressful event that is too extreme to be explained by normal forgetfulness. About six percent of the population has this disorder. It usually occurs in late adulthood. There is no known difference seen between men and women. They can be experiencing a ton of emotions of shame and guilt. It can result from conflicts over unacceptable urges or impulses. An example of this is intense sexual, suicidal, or violent compulsions. Betrayal trauma can be an explanation of amnesia by how extreme of the trauma and by the extent that a negative event represents a betrayal by a trusted. This betrayal is thought to influence the way in which the event is processed and remembered. The final dissociative disorder is called depersonalization/derealization disorder. It is a dissociative disorder in which the individual experiences recurrent and persistent episodes of depersonalization or derealization. It is a condition in which people feel a sense of unreality or detachment from their surroundings. Depersonalization disorder occurs bit by bit of feeling disconnected or detached from one’s body and thoughts. People with this disorder has said it feels like you are observing yourself from outside of your body and it makes you feel like you are dreaming. It has been said that an episode of depersonalization disorder can last anywhere from a few minutes to many years. It could also be a symptom of some other disorders such as brain disease and seizure disorders. History Depersonalization Disorder did not get its official name until 1898. The views on Depersonalization Disorder in the 1930’s became more popular because of the work of Mayer Gross. It is likely to start between the ages of 15 to 30. It also can be long-lasting and either steady or episodic. Not too much know about the treatment of this disorder and it is hard to treat. Psychotherapy may an option for treatment. To begin living their normal day-to-day life, the person must understand and accept their past. They would be using psychological techniques to enhance communication and resolve conflict. It’s hard to know how to prevent depersonalization disorder when the cause is still unknown. Some clinicians believe that depersonalization could be caused from an event in during childhood. To prevent it from furthering it would be good to develop screening techniques for identifying kids at risk.