in the context of the effects of substances of abuse, medications, or several toxins. They are
distinguished from the substance use disorder s, in which a cluster of cognitive, behav-
ioral, and physiological symptoms contribute to the continued use of a substance despite
significant substance-related problems. The substance/medication-induced mental disor-
ders may be induced by the 10 classes of subs tances that produce su bstance use disorders,
or by a great variety of other medications used in medical treatment. Each substance-
induced mental disorder is desc ribed in the relevant chapter (e.g., “Depressive Disorders,”
“Neurocognitive Disorders”), an d therefore, only a brief description is offered here. All
substance/medication-induced disorders share common characte ristics. It is important to