Without any sampling, we included all IV drug abusers of Kashan prison in our study. They were assessed through GHQ-28 and demographic characteristic questionnaire. In addiction, they were interviewed via DSM-IV check list and evaluated by three psychiatrists.

Through psychiatric interviews, the most common disorders, in this study, include anti-social personality disorder in 28 persons (93/6%), mood disorder in 21 ones (47/7%), anxiety disorder in 8 ones (18/8%) and adjustment disorder in 3 ones (6/8%)19 ones (43/1%) multi disorder and 25 ones (56/8%) one disorder. In this study, no meaningful relationship between disorder and marital status, job and educational level could be found, but it should be emphasized that the emergence of mental disorder among the unemployed male IV drug abusers and those male IV drug abusers younger than 30 has been more than other IV drug abusers.

Based on the findings of this study, IV drug abusers are not in good mental health. This subject investigation needs more comprehensive and extensive study in this area.