APA Dictionary of Psychology

inpatient and outpatient programs designed to help individuals diagnosed with substance use disorder or addiction overcome their dependence on drugs or alcohol and achieve recovery. These include but are not limited to short- and long-term residential programs (colloquially known as “rehab”), clinic- and hospital-based outpatient programs, methadone maintenance therapy, and twelve-step programs. Also called substance use disorder treatment and drug abuse treatment. See also alcohol rehabilitation.