Symptoms depend on the type of dissociative disorder, but may include:
- A sense of being separated from yourself and your emotions.
- Thinking that people and things around you are distorted and not real.
- A blurred sense of your own identity.
- Severe stress or problems in relationships, work or other important areas of life.
- Not being able to cope well with emotional or work-related stress.
- Memory loss, also called amnesia, of certain time periods, events, people and personal information.
- Mental health problems, such as depression, anxiety, and suicidal thoughts and behaviors.
The American Psychiatric Association defines three major dissociative disorders: Depersonalization/derealization disorder, dissociative amnesia, and dissociative identity disorder.
Depersonalization/derealization disorder
Depersonalization involves a sense of separation from yourself or feeling like you're outside of yourself. You may feel as if you're seeing your actions, feelings, thoughts and self from a distance, like you're watching a movie.
Derealization involves feeling that other people and things are separate from you and seem foggy or dreamlike. Time may seem to slow down or speed up. The world may seem unreal.
You may go through depersonalization, derealization or both. Symptoms, which can be very distressing, may last hours, days, weeks or months. They may come and go over many years. Or they may become ongoing.
Dissociative amnesia
The main symptom of dissociative amnesia is memory loss that's more severe than usual forgetfulness. The memory loss can't be explained by a medical condition. You can't recall information about yourself or events and people in your life, especially from a time when you felt shock, distress or pain. A bout of dissociative amnesia usually occurs suddenly. It may last minutes, hours, or rarely, months or years.
Dissociative amnesia can be specific to events in a certain time, such as intense combat. More rarely, it can involve complete loss of memory about yourself. It sometimes may involve travel or confused wandering away from your life. This confused wandering is called dissociative fugue.
Dissociative identity disorder
Formerly known as multiple personality disorder, this disorder involves "switching" to other identities. You may feel as if you have two or more people talking or living inside your head. You may feel like you're possessed by other identities.
Each identity may have a unique name, personal history and features. These identities sometimes include differences in voice, gender, mannerisms and even such physical qualities as the need for eyeglasses. There also are differences in how familiar each identity is with the others. Dissociative identity disorder usually also includes bouts of amnesia and often includes times of confused wandering.
When to see a doctor
Sometimes dissociative disorder symptoms occur in a crisis with severe or impulsive behavior. People with these symptoms need care more urgently and in an emergency department at a hospital when safety becomes a concern.
If you or a loved one has less urgent symptoms that may be a dissociative disorder, contact your doctor or other health care professional for help.
Suicidal thoughts or behavior
If you have thoughts of hurting yourself or someone else, call 911 or your local emergency number right away or go to an emergency department.
Share your concerns with a trusted relative or friend. Or contact a suicide hotline:
- In the U.S., call or text 988 to reach the 988 Suicide & Crisis Lifeline, available 24 hours a day, 7 days a week. Or use the Lifeline Chat at 988lifeline.org/chat/. Services are free and confidential.
- If you're a U.S. veteran or service member in crisis, call 988 and then press 1, or text 838255. Or chat using veteranscrisisline.net/get-help-now/chat/.
- The Suicide & Crisis Lifeline in the U.S. has a Spanish language phone line at
1-888-628-9454.