Internalized Stigma Measurement in Substance Use Treatment Settings: A Narrative Review.

Stigma relating to substance use disorders is one of the many barriers to enrolling in substance use treatment. Stigma is also related to poorer substance use treatment outcomes, yet few studies of substance use and substance use treatment outcomes include measures of stigma. Stigma is a multi-level experience occurring as a result of discrimination within a systematic power structure promoting inequities among marginalized populations. Several domains of stigma are manifested among individuals seeking treatment for a substance use disorder, with internalized stigma being the most commonly measured. The current paper is a narrative review of measures that have been developed to measure internalized stigma related to substance use in treatment settings. Measures of stigma (n=8) in substance use treatment settings were identified using PubMed and PsycINFO databases. The review identified various strengths of existing measures, including a broad range of measures with mostly excellent internal consistency. The review also identified limitations including the general lack of consideration for multiple domains and intersecting forms of stigma, samples with limited racial and ethnic diversity, and the lack of assessments of polysubstance use. The development of measures of stigma that assess multiple domains of stigma and that are tested in a wide range of substance use treatment settings with racially and ethnically diverse participants is needed. This is of particular importance because stigma remains a crucial barrier to successful initiation and completion of substance use treatment.