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  2. Simple-type schizophrenia - Wikipedia

    en.wikipedia.org/wiki/Simple-type_schizophrenia

    Simple-type schizophrenia is characterized by negative ("deficit") symptoms, such as avolition, apathy, anhedonia, reduced affect display, lack of initiative, lack of motivation, low activity; with absence of hallucinations or delusions of any kind. Simple schizophrenia was included as a proposed diagnosis for further study in the appendix of ...

  3. Thought blocking - Wikipedia

    en.wikipedia.org/wiki/Thought_blocking

    In schizophrenia, patients experience two types of symptoms: positive and negative. Positive symptoms include behavior added on to a person's daily functioning. For instance, delusions , hallucinations , disorganized speech, disorganized behavior and thought are all positive symptoms.

  4. Glutamate hypothesis of schizophrenia - Wikipedia

    en.wikipedia.org/wiki/Glutamate_hypothesis_of...

    Ketamine produces more similar symptoms (hallucinations, withdrawal) without observed permanent effects (other than ketamine tolerance). Both arylcyclohexamines have some(uM) affinity to D2 and as triple reuptake inhibitors. PCP is representative symptomatically, but does appear to cause brain structure changes seen in schizophrenia. [22]

  5. Schizophrenia - Wikipedia

    en.wikipedia.org/wiki/Schizophrenia

    Positive symptoms are those symptoms that are not normally experienced, but are present in people during a psychotic episode in schizophrenia, including delusions, hallucinations, and disorganized thoughts, speech and behavior or inappropriate affect, typically regarded as manifestations of psychosis. [36]

  6. Schizophreniform disorder - Wikipedia

    en.wikipedia.org/wiki/Schizophreniform_disorder

    Schizophreniform disorder is a type of mental illness that is characterized by psychosis and closely related to schizophrenia.Both schizophrenia and schizophreniform disorder, as defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR), have the same symptoms and essential features except for two differences: the level of functional impairment and the duration of symptoms.

  7. Positive and Negative Syndrome Scale - Wikipedia

    en.wikipedia.org/wiki/Positive_and_Negative...

    The name refers to the two types of symptoms in schizophrenia, as defined by the American Psychiatric Association: positive symptoms, which refer to an excess or distortion of normal functions (e.g., hallucinations and delusions), and negative symptoms, which represent a diminution or loss of normal functions. Some of these functions which may ...

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