Marijuana-induced Psychosis - what is it?

Psychosis is a break from reality – it can be mild to severe

  • A person can have a single psychotic symptom without having full-fledged psychosis

  • Full-fledged psychosis is also called a psychotic break and is defined when two or more psychotic symptoms occur at once

  • Marijuana use results in psychosis at rates higher than any other recreational drug. Amphetamines rank second with heroine at the bottom.

    • As high as 40% of marijuana users may experience a psychotic symptom

    • About 35% of those will experience a full psychotic break if they continue using heavily

    • 50% of marijuana users that experience this psychotic break will return to their pre-break normal.

    • The other 50% are never quite the same - again this can be mild or severe developing into chronic, unremitting psychosis like permanent schizophrenia

Symptoms of Psychosis defined:

  1. The primary psychotic symptom from marijuana is paranoia followed by:

  2. Racing thoughts/disordered thinking - most similar to loss of logic, saying things that don't make sense, while still using correct words and sentence structure

  3. Outright hallucinations (visual and/or auditory)

  4. Fixed delusions - about the world around the person that have no bearing on reality, i.e. that President Obama is going to visit their home tomorrow

  5. Delusions of grandeur - where the delusion has to do with great self-importance, i.e they will be elected President tomorrow or that they are the reincarnation of Jesus Christ

  6. Ideas of reference - thinking that events in the world that have nothing to do with the person actually pertain to them, i.e. if a train crashes in Japan that it was somehow caused by the person forgetting to lock his/her car

  7. Perseveration - repetitive actions and thoughts that the person cannot be deterred from; e.g. perseverating on stepping over cracks in the sidewalk instead of on the cracks

  8. Word salad - when thinking is so disordered that sentence structure is gone

Psychosis is a spectrum of permanence:

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