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Drug Use and Psychosis


What is Psychosis?

Heavy and chronic use of drugs such as cocaine and amphetamines can result in psychotic experiences.If you or someone close to you is suffering from drug induced psychosis, we can help arrange a quick admission.

Psychosis is a distorted connection with reality, whereby an individual experiences imaginary sensory stimuli as if they were real. A person suffering from psychosis cannot distinguish between the “real world” and their own perceptions which are distorted by delusions and/or hallucinations.

  • Hallucinations are the experience of seeing, hearing or smelling stimuli that is not present in reality. For example, people suffering schizophrenia frequently experience auditory hallucinations in the form of hearing voices in their heads.
  • Delusions, meanwhile, are beliefs that are self-evidently false. For example, someone with schizophrenia may believe that the government is trying to have them killed; a person with bipolar disorder may have delusions of grandeur whereby they believe they are more powerful or richer than they actually are. Psychosis is present in a number of psychological disorders.

Why do Some Drugs Cause Psychosis?

Some hallucinogenic drugs such as LSD, mescaline, psilocybin mushrooms, and some forms of cannabis can drastically alter normal sensory processing. However, all drugs disrupt the transmission of neurotransmitters within brain areas that are responsible for sensory processing. Over time, the repeated disruption of these neural pathways can lead heavy users to experience drug induced psychosis.   

Our Treatment for Drug Addiction and Psychosis

Patients suffering from drug or alcohol induced psychosis require help immediately. The residential rehabilitation treatment programme offered at Smarmore, including Consultant Psychiatrist led therapeutic and medical care, is the most intensive form of treatment for this complex disorder.

At Smarmore Castle, we prescribe each patient a personalised treatment plan according to their drug use profile and corresponding medical and psychological needs.

Get Help for Drug-Induced Psychosis

If you or someone close to you is suffering from drug induced psychosis, contact us or fill in a pre-admission form. We are available to answer questions 24 hours a day, 7 days a week, and can arrange a quick admission.


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Smarmore Castle is located near Ardee, County Louth, about 45 minutes north of Dublin, Republic of Ireland and 1.5 hours south of Belfast, Northern Ireland.