Stigmatization occurs when populations and communities are labeled and divided into ingroups and outgroups, with those in designated outgroups subject to negative stereotypes, discrimination, and loss of status. The dynamics of ingroups and outgroups are often associated with elements of power and proximity to power; those in the outgroups often have less power and are systematically placed on the fringe and in the margins. Discrimination due to stigmatization can be individual, driven by interpersonal interactions and relationships, and structural, arising from institutional and systemic barriers (Link & Phelan, 2001). In healthcare settings, stigmatization can arise from negative attitudes and behaviors, lack of provider skills and training, and structural factors such as organizational culture, quality of care standards, and resource investment (Knaak et al., 2017). For patients with SMI and/or SUD, stigmatization affects their ability to seek and participate in medical care and influences treatment and health outcomes after care has been accessed (Corrigan et al., 2014).
One result of stigmatization in medical settings is diagnostic overshadowing, when people with mental illness are underdiagnosed with co-occurring physical or mental health conditions, resulting in delayed or inappropriate treatment and worse health outcomes (Jones et al., 2008). Diagnostic overshadowing may be due to misattribution of symptoms, lack of knowledge or training about mental illness presentations, provider bias, or a combination thereof (Jones et al., 2008). Patient experiences indicate diagnostic overshadowing may be due to clinician mistrust and frequent attribution of pain and physical symptoms to mental health conditions, focusing on mental over physical health (Cunningham et al., 2023b). Patients seeking care in an emergency department (ED) frequently cited diagnostic overshadowing as a barrier to care, with ED staff triaging patients as psychiatric regardless of their complaint (Clarke et al., 2007).
Stigmatizing views on mental illness, diagnostic overshadowing, and insufficient workup negatively impact medical care for people with mental illness across locations and practice settings (Carerra et al., 2023; Hallyburton & Allison-Jones, 2023; Riffel & Chen 2020). Structural flaws in the healthcare system, such as provider training, resource availability, and lack of service coordination, can also negatively impact care (Riffel & Chen, 2020). Many primary care physicians feel unprepared to manage mental illness. Stigmatizing views of mental illness are widespread and associated with a negative outlook on treatment adherence and likelihood of success (Vistorte, 2018). Lack of formal training on mental illness, institutional resources, and opportunities for care coordination frequently impact HCP ability to care for patients with SMI or SUD (Loeb et al., 2012). People with SMI who are also people of color and/or members of the lesbian, gay, bisexual, transgender, and queer community reported intersectional discrimination influenced by mental illness stigma as well as racist, homophobic, and transphobic beliefs, including microaggressions, microinsults, and difficulty finding knowledgeable HCP with whom they could also relate (Hempeler et al., 2024).
Additionally, stigmatization of SMI is associated with longer physical illness duration and reduced visits to medical facilities, and leads to delays in care, poorer health outcomes, and decreased patient empowerment and quality of life (Chuckwuma et al., 2024). Additionally, there is a significantly increased risk of premature death and excess mortality among people with mental illness (de Mooij et al., 2019; Harris & Barraclough, 1998; Kisely & Siskind, 2021; Walker et al., 2015). The risk of all-cause mortality is 2.2 times higher for patients with mental illness than those without, with 67% of deaths in this population attributable to natural causes (Walker et al., 2015). Individuals with a mental illness develop physical health conditions and die at younger ages than those without. Furthermore, mental illness is associated with having more hospitalizations, longer hospital stays, and higher healthcare costs for physical health conditions (Richmond-Rakerd et al., 2021).
People with SMI and/or SUD frequently use strategies to avoid or reduce discrimination, including not disclosing their mental health diagnosis, changing providers when they experienced discrimination, bringing a support person to appointments, and practicing self-advocacy (Cunningham et al., 2023a; Clarke et al., 2007). Positive perceptions and behaviors by health care providers, including empathy, provider advocacy, and avoiding clinical tools and materials with stigmatizing language, can also positively impact patient care (Riffel & Chen, 2020).