Mental dissociation is a state of disconnection from one's thoughts, emotions, and sense of self. There are several other terms that are often used interchangeably with mental dissociation, including dissociative disorder, depersonalization, derealization, and dissociative amnesia. Dissociative disorder refers to a range of conditions in which a person experiences a disconnection from reality, while depersonalization and derealization specifically involve a feeling of detachment from oneself or the environment. Dissociative amnesia refers to a type of memory loss that is often associated with trauma. All of these terms refer to various manifestations of mental disconnection, which can be caused by a variety of factors, including psychological trauma, stress, and certain psychiatric conditions.