SCHIZOPHRENIA is a mental
disorder lasting for at least six months with at least two
of: delusions, hallucinations, gibberish speech,
odd behavior, or withdrawal symptoms.
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Schizophrenia is believed to be caused by a disorder
of the brain in which a chemical called dopamine is produced
in excess. Imaging studies of the brains of schizophrenics
frequently also shows a reduction in brain tissue density on the outer
in inner surfaces.
Diagnosis of schizophrenia is made by observation
of the individual by a clinician for at least two of the above symptoms.
Their is no blood test or hospital imaging test that diagnoses this
condition. However, drug use, head trauma, and some anomalies in blood
chemistry can present with confusion and bizarre behavior. So on first
coming to a hospital the individual will be subjected to blood
tests and a CAT scan of their brain to rule out other causes
of odd behavior. If these tests are negative they are then labeled
and referred to a psychiatrist for confirmation and treatment.