Drug rehabilitation (often 
drug rehab or just 
rehab) is a term for the processes of medical and/or psychotherapeutic treatment, for dependency on 
psychoactive substances such as 
alcohol, 
prescription drugs, and so-called 
street drugs such as 
cocaine, 
heroin or 
amphetamines. The general intent is to enable the patient to cease substance abuse, in order to avoid the psychological, legal, financial, social, and physical consequences that can be caused, especially by extreme abuse.