Genetic components to schizophrenia are being discovered and this illness could run in families. My family tree has a number of us with SZ and other mental illnesses hanging out on various branches.
As of yet, no definite cause has been pinpointed and there could possibly be a number of factors that create the medical condition known as schizophrenia.
Stress and environment are two factors that can cause someone to have a breakdown when he or she has a genetic predisposition to have schizophrenia.
The prevailing theory is that an excess of dopamine, a neurotransmitter in the brain, is responsible for the illness. What exactly causes the dopamine to go haywire isn't known.
So I tend to believe the genetics theory.
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