Depersonalization disorder is an altered state of mind in which someone feels separated from themselves, their surroundings, or both. Some experts refer to it as derealization disorder. It is normal to have these feelings occasionally, or as a result of some medications, health conditions, or recreational drugs. When feelings of detachment are frequent and interfere with a person's life, depersonalization disorder is a possible diagnosis.
Depersonalization disorder is a dissociative disorder. Other mental illnesses in this category include dissociative amnesia and dissociative identity disorder. Someone with a dissociative disorder has problems with emotion, perception, behavior, memory, identity, and sense of self. These disorders can disrupt every area of mental functioning and are often associated with previous psychological trauma.
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