Causes & Risk Factors
There is no single cause of schizophrenia.
What Causes Schizophrenia?
There is no single cause of schizophrenia. Research suggests that a combination of genetic, biological and environmental factors may contribute to its development.
Possible Risk Factors
- Family history
- Differences in brain development or function
- Certain pregnancy or birth complications
- Significant psychological or environmental stress
- Substance use in vulnerable individuals
Having a risk factor does not mean that someone will definitely develop schizophrenia.
Professional Assessment
A mental-health professional can consider symptoms, medical history, family history and other relevant factors when evaluating an individual.
Related Information
Continue exploring this topic.
Diagnosis
How a professional assessment works.
Symptoms
Recognising positive, negative and cognitive symptoms.
Early Warning Signs
Recognising early changes that may need assessment.
Frequently Asked Questions
Is schizophrenia caused by bad parenting?
No. Research points to a combination of genetic, biological and environmental factors, not parenting style.
Is schizophrenia hereditary?
Family history can increase risk, but most people with an affected relative do not develop it, and many people with schizophrenia have no family history.
Can stress or substance use cause schizophrenia?
They may contribute in people who are already vulnerable and can make symptoms worse, but they are not the only cause.
You Don’t Have to Face It Alone
If you or someone you care about is experiencing concerning changes in thoughts, behaviour or perception, professional assessment can help.