The symptoms that occur in schizophrenia can be divided into three categories: positive symptoms, negative symptoms, and psychomotor symptoms. The positive symptoms of schizophrenia are any added thoughts or behaviors attributed to the disorder. The positive symptoms can be further subdivided into categories which include delusions, disorganized thinking and speech, heightened perceptions and hallucinations, and inappropriate affect. There are many different type of delusions that people with schizophrenia are capable of having. The most common being delusions of persecution in which the individual believes they are personally being targeted or victimized (Comer, 2011, p.265). Delusions of reference can also occur in individuals with this disorder, and the schizophrenic individual will attach special meaning to various objects or events, even though these objects may have no connection to the person. An individual with schizophrenia may believe that he or she is god or an inventor, and this person is experiencing delusions of grandeur. Additionally, delusions of control are positive symptoms of schizophrenia in which the individual believes someone is controlling their though...
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...to play a role in schizophrenia, as an individual with schizophrenia tends to have higher dopamine levels than normal. Using brain scans, it has also been determined that many people with schizophrenia have enlarged brain ventricles, which is also thought to contribute to the disorder. The specific causes of these brain abnormalities and chemical composition have been thought to be related to issues in the development of the fetus related to nutrition, birth complications, and even viral issues.The disorder is divided into phases, a prodromal phase in which symptoms are not yet present, as well as an active phase where symptoms are fully present (Comer, 2011, p.369). A residual phase may also occur in which the individual returns to a prodromal like phase. The onset of schizophrenia can result from experiencing a traumatic event or high levels of stress (Comer, 2011).
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