Provide a brief overview of physiologic mechanism of pain . Develop a historical background of opioid use in the United States.

Provide a brief overview of physiologic mechanism of pain 2. Develop a historical background of opioid use in the United States. 3. Discuss prescribing practices that likely contribute to the current state of opioid use among U.S. citizens 4.Describe best practices for pain management 5. Acknowledge ethical and legal implications for patients who require rehabilitation for addictive behaviors.