الفهرس 
History of addiction:
HeroinOnly 14 pages are availabe for public view
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Abstract
Addiction is defined as a chronic relapsing neurobiological brain disease. The rate of drug addiction in Egypt is twice the global rate so development of new preventive and treatment modalities is crucial. One of the most insidious features of opioid addiction is the endency to relapse on the drug even weeks, months or years after stoppage of opioid use. Craving is the intense desire to take a drug again which is a prominent feature for heroin use disorder.