Background: drug users psychiatric disorders may influence high-risk sexual behaviors among injecting drug users. Therefore, The goal of our study was to assess mental disorders among injection drug users who had high-risk sexual behaviors. Methods: Study method was cross- sectional. Research statistics universe constitutes of all People suffering substance dependence disorder with pattern of injection use in Tehran and Hamedan city. The sample consisted of 235 individual with substance dependence disorder, that selected from harm reduction centers in Tehran and Hamedan city, The sampling selection method was simple random. We used the SCL90-R questionnaire to evaluate mental disorders in injection drug users. Results: The results showed that related mental disorders and high-risk sexual behaviors among injection drug users. Average of mental disorders such as somatization, anxiety disorder, obsessive-compulsive disorder and psychotic symptoms among injection drug users who had high-risk sexual behaviors was higher than injecting drug users didn’t have high-risk sexual behaviors. Conclusions: Efforts to reduce high-risk sexual behaviors among injection drug users should also include assessment of mental disorders to improve the accuracy and effectiveness of prevention and treatment efforts.
