Causes of psychosis

There is no single cause of psychosis. It’s likely that the following factors play a part:

  • Genetics – If you have a relative with psychosis you are more likely to develop it yourself
  • Chemicals – Natural increases in the chemical dopamine can cause hallucinations, delusions and disorganised thinking
  • Childhood trauma – There is some evidence that abuse or trauma in childhood can lead to experiencing psychosis at some point in your life. Not everyone who has experienced abuse develops psychosis
  • Drugs – Using cannabis, amphetamines, crystal meth or cocaine can increase your chance of developing psychosis
  • Stress – When you’re stressed, your brain releases a chemical called cortisol. This can increase the chances of psychosis

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