What Causes Psychosis?

There is no single cause of psychosis. Instead, it often arises from a complex interaction of biological, psychological, and environmental influences. Some contributing factors can include:

• Genetic Vulnerability: A family history of psychotic disorders can increase risk.
• Neurological & Chemical imbalances: Differences in brain structure or neurotransmitter function, especially involving dopamine pathways, are associated with psychosis.
• Stress & Trauma: High stress, past trauma, or prolonged adversity can heighten vulnerability.
• Substance Use: Some substances—including stimulants, cannabis, or hallucinogens—can trigger psychotic symptoms, especially in vulnerable individuals.
• Medical or Neurological Conditions: In some cases, underlying physical illness or neurological disorders contribute.

Psychosis can happen at any age but most often begins in late adolescence or early adulthood. Prompt recognition and support are critical, especially if symptoms appear suddenly or worsen over time.