The Cause and Diagnosis of Schizophrenia
The cause of schizophrenia is relatively unknown. Schizophrenia is a mental illness that can be developed through factors such as genetic makeup, brain chemistry, environment, and brain abnormality. In the United States 1%, 2.2 million people, will develop schizophrenia in their lifetime. Schizophrenia was treated in the past through five subtypes: paranoid schizophrenia, disorganized schizophrenia, catatonic schizophrenia, undifferentiated schizophrenia and residual schizophrenia.
Paranoid schizophrenia is prominently diagnosed based on the presence of auditory hallucinations or delusional thoughts. The hallucinations and delusions remain fairly consistent over time, allowing a person to manage them better since they do not cease. Individuals with this subtype can have a greater ability to engage in work and school, however major stressors can cause an increase in symptoms and behaviors.
With disorganized schizophrenia hallucinations and delusions are typically less frequent. However, activities of daily living such as caring for oneself, observing personal hygiene, and other routine tasks can be impaired. There is also significant impairment in ability to communicate effectively with loved ones or providers.
Catatonic schizophrenia is diagnosed through prominent disruption of psychomotor activities: a person can be frozen in one position for a long period of time.
Undifferentiated schizophrenia includes the general diagnostic criteria for schizophrenia but does not fit into any subtype.
Residual schizophrenia causes an individual to no longer experiences severe hallucinations or delusions, although some may still be present. Symptoms of inappropriate social behavior, inability to speak, lack of interest in life and lack of emotional expression may still be present.
Schizoaffective disorder is a chronic mental health condition that is characterized primarily by symptoms of schizophrenia accompanied by a mood disorder. Symptoms can include hallucinations or delusions, mania, and depression.
Diagnosing schizophrenia and schizoaffective disorders involves psychiatric evaluation, testing and screenings through an MRI and CT scan, alcohol and drug screenings, and a physical exam. Alcohol and drug use must not be present when undergoing diagnosis, since some substance use can cause symptoms of delusions, hallucinations and various other side effects.