The term "dual diagnosis" is used to designate what?
A) Clients who have two mental illnesses at the same time
B) Clients who have two forms of substance or drug abuse simultaneously
C) Clients who are mentally retarded and have a comorbid learning disorder
D) Clients who have a mental illness with a comorbid substance-related disorder
Ans: D
The term "dual diagnosis" is used to designate mentally ill clients who also have a comorbid substance-related disorder. It has been estimated that approximately 50% to 75% of severely mentally ill clients have a dual diagnosis.
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