Substance Use and Addiction Disorders · NCLEX Exam

What is the difference between substance dependence (now called substance-use disorder) and simple substance use?

  1. Excess serotonin activity acting alone in the brain
  2. Dopamine pathway dysregulation in reward circuitry
  3. No measurable change occurs in brain chemistry at all
  4. Excess hemoglobin circulating throughout the bloodstream
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Correct answer: Dopamine pathway dysregulation in reward circuitry

Substance-use disorder is identified by a cluster of behaviors including impaired control over use, continuing despite consequences, tolerance, withdrawal, and significant impairment in functioning.

Difficulty: Easy Question 17 of 20

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