DissociativeIdentityDisorder (DID), formerly known as MultiplePersonalityDisorder (MPD), is also referred to as dissociative personality disorder in some publications. It is a type of psychological disorder that is classified in the Diagnostic and Statistical Manual of Mental Disorders (DSM) as an Axis I dissociative disorder. Dissociative identity disorder should be diagnosed differently from the following disorders: schizotypal personality disorder: schizotypal personality disorder has abnormalities in thinking and emotion and behavioral peculiarities similar to schizophrenia, but without the typical schizotypal disorder and exact onset, and its evolution and course are usually characterized by personality disorders. Same as: borderline schizophrenia; latent schizoaffective disorder. Paranoid personality disorder: Paranoid personality, also known as delusional personality, is a type of psychopathic personality typically characterized by extreme stubbornness and obstinacy, which is characterized by excessive concern for oneself, overestimation of self, and often blaming others for frustrations or pushing for objectivity. It is one of the 12 types of personality disorders in the 1980 Diagnostic Statistical Manual (DSM-III). According to survey data, the number of people with paranoid personality disorder accounts for 5.8% of the total number of psychological disorders, and the actual situation may exceed this percentage because these people have little self-awareness and are in denial about their paranoid behavior. Impulsive Personality Disorder: Also known as violent or aggressive personality disorder. It is a type of mental disorder in which there is a strong desire to perform certain behaviors and carry them out. It is also called epileptic personality because it has a sudden onset pattern during seizures, similar to epilepsy. This type of person often manifests itself in childhood, and often due to minor incidents and mental stimuli, there is a sudden outburst of intense violent behavior, and he or she cannot control himself or herself, thus causing damage and harm to others. There are various forms of this disorder, including intermittent explosive disorder, arson, kleptomania, hair pulling, and pathological gambling. There are no complete statistics on the prevalence in the population. Obsessive-compulsive personality disorder: Obsessive-compulsive disorder (OCD) is a neurological disorder characterized by the recurrence of obsessions and compulsions. Obsessive-compulsive ideas are thoughts, representations, or intentions that repeatedly enter the patient’s consciousness in stereotyped form. These thoughts, representations, or intentions are irrelevant, unnecessary, or superfluous to the patient; the patient realizes that they are his own thoughts and is distressed by the desire to get rid of them, but is unable to do anything about it. Compulsive actions are recurring stereotypical behaviors or ritual actions that are the result of the patient’s submission to compulsive ideas in an attempt to reduce internal anxiety. Histrionic Personality Disorder: Histrionic Personality Disorder, also known as hysterical or attention-seeking personality disorder, is a personality disorder characterized by excessive emotionality or exaggerated speech and behavior to attract the attention of others. People with performance-based personality disorder often behave in a provocative manner and are very concerned with their appearance. These people are emotionally outgoing, expressive, happy, angry, sad and happy, delicate, prone to temper tantrums, like sympathy and pity, changeable and suggestible. Self-centered, sociable and self-expressive. Demand a lot from others and do not consider the interests of others. Superficial thinking, unaccustomed to logical thinking, appearing naive and childish. The incidence is about twice as high in women as in men.