Original sentence: As a diagnosis, DID is controversial, with many professional psychiatrists and commentators arguing that it has no basis in reality.Dissociative Identity Disorder (DID) is defined in the DSM-IV-TR as a condition where a single individual evidences two or more distinct identities or personalities, each with its own pattern of perceiving and interacting with the environment.Mental health institutes, such as McLean Hospital, have wards specifically designated for dissociative identity disorder.Some psychiatrists say they have encountered a number of cases that appear to them to confirm the reality of the existence of this condition.The idea is that at least two personalities may routinely take control of the individual's behavior.There diagnosis also calls for some associated memory loss that goes beyond normal forgetfulness, often referred to as "losing time"
Edited sentence: At least two of these personalities are considered to routinely take control of the individual's behavior, and there is also some associated memory loss which is beyond normal forgetfulness.Despite the controversy, some mental health institutes, such as McLean Hospital, have wards specifically designated for dissociative identity disorder.Dissociative identity disorder (DID) is a controversial diagnosis described in the DSM IV, as the existence in an individual of two or more distinct identities or personalities, each with its own pattern of perceiving and interacting with the environment.However, various experienced psychiatrists say they have encountered a number of cases that appear to them to confirm the reality of the existence of this condition.Studies among mental health professionals show widespread skepticism that this diagnosis represents a mental disorder instead of a culturally-based and therapist-caused delusion.The symptoms must occur independently from substance abuse or a more general medical condition in order to be diagnosed.This memory loss is often referred to as "losing time" or amnesia.While dissociation is a demonstrable psychiatric condition that is tied to several different disorders, specifically those involving early childhood trauma and anxiety, multiple personality remains controversial