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Dissociative identity disorder; Other names: Multiple personality disorder Split personality disorder: Specialty: Psychiatry, clinical psychology: Symptoms: At least two distinct and relatively enduring personality states, [1] recurrent episodes of dissociative amnesia, [1] inexplicable intrusions into consciousness (e.g., voices, intrusive thoughts, impulses, trauma-related beliefs), [1] [2 ...
Estimates of the heritability of schizophrenia are between 70% and 80%, which implies that 70% to 80% of the individual differences in risk of schizophrenia are associated with genetics. [21] [84] These estimates vary because of the difficulty in separating genetic and environmental influences, and their accuracy has been queried.
Kraepelin acknowledged that "there are many overlaps in this area," that is, the area between schizophrenia and mood disorders. [94] In 1959, psychiatrist Kurt Schneider (1887–1967) began to further refine conceptualizations of the different forms that schizoaffective disorders can take since he observed "concurrent and sequential types". [64]
Eccentric behavior and discomfort with relationships define the disorder, and people may develop schizophrenia later. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 ...
Through MRIs, psychiatrists can see specific structural differences in the brains of people with schizophrenia and bipolar disorder. These differences include volume of gray matter, neuropathological size differences variations and cortical thickness, which are associated with cognitive differences on tests.
Paraphrenia is often associated with a physical change in the brain, such as a tumor, stroke, ventricular enlargement, or neurodegenerative process. [4] Research that reviewed the relationship between organic brain lesions and the development of delusions suggested that "brain lesions which lead to subcortical dysfunction could produce delusions when elaborated by an intact cortex".
Schizoid personality disorder (/ ˈ s k ɪ t s ɔɪ d, ˈ s k ɪ d z ɔɪ d, ˈ s k ɪ z ɔɪ d /, often abbreviated as SzPD or ScPD) is a personality disorder characterized by a lack of interest in social relationships, [9] a tendency toward a solitary or sheltered lifestyle, secretiveness, emotional coldness, detachment, and apathy. [10]
Neuroimaging studies have found differences between the medicated brains of individuals with schizophrenia, and the brains of those without, though research does not know the cause of the difference. [34] In childhood-onset schizophrenia, there appears to be a more rapid loss of cerebral grey matter during adolescence.
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