High doses of what drug may cause the sufferer to exhibit symptoms similar to that of a person with paranoid schizophrenia?

Question

Quizplus · Accepted Answer

High doses of amphetamines can cause psychosis-like symptoms such as paranoia, hallucinations, and delusions, which are similar to the symptoms experienced by people with paranoid schizophrenia. Valium, "downers," and narcotics are not known to cause these specific symptoms at high doses.

High Doses of What Drug May Cause the Sufferer to Exhibit