Is cannabis somehow linked to schizophrenia


Psychiatrists and psychotherapists basically differentiate between two different types of psychosis: exogenous and endogenous psychosis. The division is based on what the trigger for the psychosis is.

Endogenous psychosis

Endogenous psychosis means that doctors cannot determine a clear physical cause. It is also called primary psychosis or inorganic psychosis.

The most common form the endogenous psychosis is the schizophrenia (schizophrenic psychosis). It is mainly characterized by formal and substantive thought disorders. Perception disorders also often occur in those affected. On average, around two to three in 1,000 people in Germany suffer from schizophrenia.

There are also numerous other endogenous types of psychosis:

  • Schizoaffective psychosis: Behind this is a psychosis in which schizophrenic symptoms such as delusions or hallucinations mix with manic or depressive symptoms.
  • Paranoid psychosis: Paranoid symptoms, such as fear of persecution, can occur in various mental disorders, such as schizophrenia or borderline disorder. However, there is also an independent diagnosis of "paranoid personality disorder".
  • Polymorphic psychotic disorder: Delusions, hallucinations and perceptual disorders can change within days or even hours.
  • Postpartum psychosis(also postpartum psychosis or postpartum psychosis): By this, doctors understand a psychosis that occurs within four weeks of the birth.
  • Psychotic depression: Behind this is a depression that is associated with psychotic symptoms.

Mental disorders in which mainly the emotional state or mood are disturbed were previously described as affective psychoses. Today this category is called “mood disorders”.

Exogenous psychosis

An exogenous psychosis arises from physical causes, for example a disease of organs or the brain. Medicines or drugs (drug psychosis, drug-induced psychosis) can also trigger an exogenous psychosis. This form is also called secondary psychosis or organic psychosis.

The following diseases can be associated with psychosis:

  • neurodegenerative diseases such as dementia (e.g. Alzheimer's disease), paralysis (Parkinson's disease) or multiple sclerosis.
  • epilepsy
  • Traumatic brain injury
  • Brain tumors
  • Metabolic disorders
  • Infectious diseases

Ultimately, exogenous psychosis can also be traced back to the consumption of drugs such as alcohol, cannabis or LSD. In the case of severe drug addiction, it can even result from withdrawal. The use of some medications is also associated with psychosis.