For millions of socially isolated adults, the emergency department may function less as a medical venue and more as an unintended substitute for human connection — a paradox that health systems have largely failed to recognize or measure. Understanding how ED visits intersect with chronic loneliness could reshape triage priorities and post-discharge planning for one of medicine's most invisible patient populations.
This paper introduces a protocol for a scoping review designed to systematically map existing evidence on loneliness and social isolation among emergency department patients. Following the established Arksey and O'Malley methodological framework and PRISMA-ScR reporting standards, the review will examine both patient experiences and clinician perspectives. The authors note that loneliness or social isolation may be the actual — if unacknowledged — driver behind some ED presentations, yet current ED workflows offer neither standardized screening tools nor staff training to identify or address these conditions at the point of care.
This protocol arrives at a meaningful moment. A growing body of epidemiological research, including work from Holt-Lunstad and colleagues, has established that social isolation carries mortality risks comparable to smoking 15 cigarettes daily. Yet translating that population-level understanding into actionable emergency care protocols remains largely undone. The ED occupies a structurally unique position: it is often the last safety net for people with fractured social networks, yet its chaotic, high-throughput environment may compound rather than relieve the distress of isolated individuals. Critically, this is a scoping review protocol — not completed findings — meaning the actual evidence synthesis has not yet occurred. The utility of this work will depend heavily on the volume and quality of primary studies uncovered. If the literature base proves thin, it will itself be a meaningful finding, signaling a significant gap in emergency medicine research. For health systems investing in social prescribing and loneliness interventions, the eventual review could inform whether the ED is a viable or counterproductive touchpoint for identification and referral.
