Psychotoxicity is a

pharmacology Pharmacology is the science of drugs and medications, including a substance's origin, composition, pharmacokinetics, pharmacodynamics, therapeutic use, and toxicology. More specifically, it is the study of the interactions that occur betwee ...

term that refers to the effect when a

drug A drug is any chemical substance other than a nutrient or an essential dietary ingredient, which, when administered to a living organism, produces a biological effect. Consumption of drugs can be via insufflation (medicine), inhalation, drug i ...

interferes seriously with normal behaviour.D R Laurence, A. L. Bacharach ''Evaluation of Drug Activities: Pharmacometrics'' 1483263460 2013 p.177 "PSYCHOTOXICITY (a) Test Methods Drug-induced psychotoxicity may be defined as any state in which the central effects of a drug interfere seriously with normal behaviour. The characteristics of the psychotoxicity are determined by the pharmacological class of the drug involved. The narcotic analgesics produce apathy and indifference, which interfere with the responsible conduct of daily affairs."

References

Drug safety {{symptom-stub