How is it caused?
The exact cause of the illness is not known as yet. Research into the illness continues; what has emerged in recent years is a bio psychosocial model of the illness.
The Biological aspect :
Research indicates that schizophrenia is a disorder of the brain with a tendency to run in families. A certain vulnerability to the illness is transmitted genetically; a person whose family records other cases of schizophrenia is more likely to be afflicted than one without such a history. The children of a schizophrenic parent. for example, each have about a 10% chance of developing schizophrenia as compared with 1% chance in the general population. Most scientists agree that a vulnerability to the illness is inherited, a potential that, given a certain set of factors, can lead it schizophrenia.