Definition Definition: A behavioral syndrome characterized by evidence of psychological dependence (craving), uncontrolled/compulsive drug use despite harmful side effects, and other drug-related aberrant behavior (e.g., altering prescriptions, manipulating health care providers, drug hoarding or sales, unsanctioned dose escalation). Prevalence: Opioid addiction is as high as 50% in patients with chronic nonmalignant pain. 7.7% in patients […]