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Schizophrenia is a devastating disorder that seems to blindside its victims. Researchers have spent millions of dollars on developing treatments for schizophrenia, and have discovered that it is a physical illness. Brain chemistry and brain activity are different in a person who is suffering from schizophrenia compared to a person without schizophrenia. Like other illnesses schizophrenia does have symptoms and signs. It can be inherited and it does get better with medication. The brain is made up of nerve cells, called neurons, and chemicals, called neurotransmitters. An imbalance of one neurotransmitter, dopamine, is thought to cause the symptoms of schizophrenia. Serotonin, another neurotransmitter is also thought to play a significant role in causing the symptoms of schizophrenia. Brain activity differs in a brain with schizophrenia and a brain without schizophrenia. In the brain with schizophrenia, far more neurotransmitters are released between neurons. Thus, the symptoms of schizophrenia occur. The "dopamine hypothesis" has been the main theory regarding the cause of the symptoms of schizophrenia. Researchers believe that many of the symptoms of schizophrenia are a result of excess of dopamine in the brain. Antipsychot