Advertisement

Does drug use cause schizophrenia?

Douglas E. Severance, MD
Family Medicine
The National Institute of Mental Health (NIMH) reports that people with schizophrenia are more likely to abuse drugs than other people. The NIMH also reports that some drugs are known to worsen symptoms of schizophrenia in people with the illness. Drugs including PCP and marijuana may also cause symptoms of schizophrenia, such  as psychotic symptoms. However, this doesn't always mean that an individual will develop full-blown schizophrenia.

The National Institute on Drug Abuse reports that early marijuana use is associated with a diagnosis of schizophrenia. However, experts are not certain whether marijuana actually causes the disease or whether people prone to schizophrenia start using marijuana at an early age.

Continue Learning about Schizophrenia

4 Factors That May Increase Your Schizophrenia Risk
4 Factors That May Increase Your Schizophrenia Risk
Schizophrenia—a mental illness that typically distorts a person’s perception of reality—affects less than one percent of the US population.  Although ...
Read More
What are common myths and misconceptions about schizophrenia?
World Federation For Mental Health (WFMH)World Federation For Mental Health (WFMH)
There are many misconceptions and myths about schizophrenia. There is evidence that such myths help ...
More Answers
What do I need to know about caring for someone with schizophrenia?
Donna Hill Howes, RNDonna Hill Howes, RN
The National Institutes of Mental Health explains that family members are often the primary care...
More Answers
What Are Delusions Versus Hallucinations?
What Are Delusions Versus Hallucinations?

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.