Addiction to benzodiazepines is a consumer behavior providing pleasure and relief, characterized by the repeated failure of its control and its persistence in spite of its damage. Our work is related to the study of socio-demographic features, clinical diagnosis and treatment of a sample of patients addicted to benzodiazepines monitored intermediate care center for drug addicts (CIST) of Annaba (Eastern Algeria) during the period from 1 January December 31, 2009. Our preliminary results cover a population of young adults, predominantly male, regularly consume two types of benzodiazepines in over half the cases and for a period exceeding 5 years. Results to follow.