Research on the public’s stigmatizing attitudes toward individuals with alcohol- and substance-use disorders is well-documented, but researchers are increasingly focused on how those public attitudes are constructed and sustained. The current study seized the opportunity to better understand the phenomena of stigmatized backstory communication as it relates to the lived experiences of substance and alcohol users. Specifically, this study addressed the following overarching research question: how are stigmatized individuals’ backstories discursively manifest? Informed by a constructivist grounded theory approach, analyses of 20 interviews with individuals who self-identified with alcohol-use disorder (AUD) and/or substance-use disorder (SUD) revealed that their stigmatized backstory communication was constituted by four major themes: (1) denial, (2) the dark side, (3) oscillation, and (4) discretionary disclosure. These themes reveal both the content and process of backstory as a communication phenomenon. The findings highlight the need to engage substance and alcohol users in the national, master narrative of addiction, and also provide a new theoretical perspective for interpersonal scholars. Several practical applications are also offered to help relational partners, friends, and others, to provide support for substance and alcohol users.