Final answer:
The DSM-IV-TR describes behavioral, psychological, or biological dysfunction as a mental health issue.
Step-by-step explanation:
The DSM-IV-TR, which is the fourth edition of the Diagnostic and Statistical Manual of Mental Disorders, describes behavioral, psychological, or biological dysfunction as a mental health issue. It provides criteria for diagnosing various mental disorders based on the presence of specific symptoms and impairments in functioning. This manual is used by clinicians to classify and diagnose individuals with mental health conditions.