Demographic Features of Patients on Methadone Maintenance Treatment in Zahedan, Iran

Addiction is a complex, chronic and multidimensional illness which is defined as involuntary and uncontrollable desire for drug use - in which person cannot resist against his/her desire to use drugs - despite negative symptoms and relapses. Statistics presented by international organizations (WHO 2011) suggests worldwide increase in drug use. The only difference in drug use between various countries relies on pattern of drug use.