can alcohol cause psychosis
Environmental Causes. Psychosis can be triggered by the use of alcohol and illegal drugs, including stimulants such as methamphetamine (meth) and cocaine. Hallucinogenic drugs like LSD (acid) often cause users to see things that are not really there, but this effect is temporary.eople who are psychotic have false thoughts (delusions) and/or see or hear things that are not there (hallucinations). These are referred to as âpositiveâ symptoms; ânegativeâ symptoms like loss of motivation and social withdrawal can also occur.