Schizophrenia is one of the disorders that has been discussed over the years, it has a difficult past and is a psychological disorder that manifests itself with numerous disorders of thought, behavior and emotions. Individuals suffering from schizophrenia usually hear voices in their head, have unusual but not reality-based beliefs, and have different thoughts that are based on hallucinations and delusions that also change in behavior. However, even today the cause of schizophrenia is unknown. Yet the psychologist states that the cause of the disorder is the combination of genetic and environmental factors. Schizophrenia is one of the most serious mental disorders and is treated with a combination of medications and therapy. Although some may recover from the disorder, symptoms may return. Living with schizophrenia can be manageable, and you can also reduce your chances of serious relapse by recognizing the symptoms, taking medication, and talking about the condition with others. In this role he will evaluate the diagnosis and treatment of schizophrenia. Also discuss the symptoms positively and negatively along with the diagnosis process. Furthermore, the diagnostic principles and the impact on access will be indicated. Finally resolve the treatment discussion and consider what doctors say about treatment and also what psychologists say about treatment. According to the recent research of biochemical theories it is stated that schizophrenia is caused by the neurotransmitter dopamine in the prefrontal cortex which is a chemical substance that transmits signals to the brain. On the other hand researchers say that psychological factors are cognitive functions such as learning, m...... middle of paper ...... and the person. Also about anomalies in behavior and this is informed by family or friends. Additionally by the family doctor, social worker, clinical assessment by a psychiatrist, clinical psychologist and other mental health professional. However, doctors are the ones who must evaluate based on an identical list of externally evident symptoms, and not on the incorrect internal psychological process. Although researchers revealed that schizophrenia patients exhibit some abnormalities in the structure and functioning of the nervous system the brain associated with normal test subjects. However, researchers say there are no laboratory parameters that can be used to diagnose schizophrenia. But they say there has been help in discovering imaging procedures such as computed tomography, CT scans to diagnose the abnormality.