Schizophrenia is a chronic and severe brain disorder. Schizophrenia is found all over the world. People with schizophrenia may have perceptions of reality that are strikingly different from the reality seen and shared by others around them. Their behavior may seem odd, unusual or even bizarre at times. People with schizophrenia may not make sense when they talk, may sit for hours without moving or talking much, or may seem perfectly fine until they talk about what they are really thinking. These experiences are terrifying and can cause fearfulness, withdrawal, or extreme agitation.

Causes of Schizophrenia are following:

• Genetic factor: Such studies indicate schizophrenia is influenced by genetics. Schizophrenia genetics research has also studied parent/sibling genetics. A person whose parent has schizophrenia has a ten percent chance of inheriting the condition. It appears likely that multiple genes are involved in creating a predisposition to develop the disorder
• Dopamine imbalances: Dopamine imbalances have been suggested as a possible cause of schizophrenia. Dopamine is a brain neurotransmitter Neurotransmitters, substances that allow communication between nerve cells, have long been thought to be involved in the development of schizophrenia.
• Environmental factor: Twin and adoption studies suggest that inherited genes make a person vulnerable to schizophrenia and then environmental factors act on this vulnerability to trigger the disorder. Life stressors may trigger schizophrenia in people whose genetics leave them susceptible to the illness. Ending relationships, leaving home, and other life stressors have been linked to schizophrenia onset in some cases.
• Abnormal brain structure: In addition to abnormal brain chemistry, abnormalities in brain structure may also play a role in schizophrenia. Extensive studies have examined the brain structure of schizophrenia patients. Many schizophrenics have enlarged brain ventricles (cavities inside the brain containing cerebrospinal fluid). . Some studies also suggest that abnormalities in the temporal lobes, hippocampus, and amygdala are connected to schizophrenia’s positive symptoms.