BACKGROUND Substance use disorder is a growing problem worldwide, and the stigma associated with it remains a significant barrier to treatment and recovery. This study aimed to assess the perceived stigma among individuals with substance use disorders and its correlation with their socio-demographic characteristics and clinical history Parameters.

METHODS A cross-sectional study was conducted among 552 patients with substance use disorders admitted to the outpatient clinics of Mansoura University Hospital, Addiction Treatment Unit of the Psychiatry Department, and Port Said Mental Hospital, Addiction Department. Participants completed a self-administered questionnaire, which included demographic information, clinical history parameters, and the Perceived Stigma of Substance Abuse Scale (PSAS).

RESULTS The study found that almost half of the participants were aged 29 or younger, married, and had a median stigma score of 20. The vast majority of participants were male, had no previous legal problems, and had a median stigma score of 19. The most common type of substance used was opioids, and more than half of the participants were still using drugs. The highest mean stigma scores were for the items "Most people think less of a person who has been in treatment for substance use" and "Most employers will pass over the application of someone who has been treated for substance use in favor of another applicant." The perceived stigma score was significantly correlated with the severity of use but not with age or duration of use.

CONCLUSION Our study investigates self-stigma in substance use disorder (SUD), revealing its variance across demographics and clinical groups. We found that self-stigma correlates with use severity and possibly decreases with abstinence. Notably, societal bias contributes significantly to self-stigma, necessitating societal interventions. The impact of self-stigma on patient well-being highlights the need for personalized treatments and stigma reduction strategies.