DURING the last few years a great revival of interest has occurred in the search for a biochemical basis for schizophrenia and the other types of psychosis. There are several reasons for this.

Lysergic acid diethylamide (LSD) is a derivative of a fungus that grows on grains like wheat and rye. A Swiss medical researcher accidentally discovered it in 1938 and experienced its effects ...

Hallucinogen Persisting Perception Disorder, as defined by the DSM-5, is specifically caused by hallucinogenic drugs, primarily but not exclusively by LSD (lysergic acid diethylamide). The ...