Psychosis is a mental illness, which is produced over some time it causes an individual to see the outside and administer their surroundings differently. Drug use psychosis disrupts the function of brain neurotransmitters like serotonin and dopamine. Cannabis influence can also cause, cerebral confusion, hallucinations, and dizziness can also be brought on by alcohol, these effects often go away soon when liquor wears off and can be taken away from drug addiction treatment.