Psychosis and Early Psychosis

  • Genetics – Having a close relative with schizophrenia or bipolar disorder increases the risk of psychosis.
  • Trauma – Exposure to a traumatic event can trigger a psychotic episode. 
  • Drugs and Alcohol – Addictions to drugs and alcohol are strongly linked to psychosis. In one study, 74% of people with first episode psychosis had a substance use disorder at some point during their lifetime. Cannabis, LSD, alcohol, amphetamines, and other substances are associated with increased risk of psychosis in people who have an underlying predisposition.
  • Head Injuries – Traumatic brain injuries increase the risk of psychosis in the months and years following the head injury. 
  • Brain Disorders – Alzheimer’s disease and other dementias, as well as strokes, brain tumors, and Parkinson’s disease may lead to psychosis. 
  • Mental Health Conditions – Psychosis is often seen as a symptom of mental health disorders. 
  • Infections – Chronic infections, such as Lyme disease, have been associated with psychotic episodes. 
  • Hormonal Changes – The hormonal changes that occur during puberty put adolescents and young adults at greater risk of developing psychosis. 
  • Sleep Deprivation – Chronic insomnia can lead to symptoms of psychosis. 
  • Medication Use – Certain medications—including some common antibiotics, muscle relaxants, pain relievers, and others—have been found to induce psychosis in some people.