Substance abuse, also known as drug abuse, refers to a maladaptive pattern of use of a substance (drug) that is not considered dependent. Substance abuse/drug abuse is not limited to mood-altering ...

Addiction is a disease ... people in the U.S. have opioid use disorder (OUD), or they’ve had it in the past. According to the National Center for Drug Abuse Statistics, 3.8 percent of American ...