Long COVID is a multi-system, heterogeneous condition that manifests as new or worsened symptoms lasting at least 3 months following acute SARS-CoV-2 infection, often despite normal results on routine diagnostic testing. Common manifestations include fatigue, post-exertional malaise, cognitive impairment, and orthostatic intolerance. Primary care clinicians are uniquely positioned to identify and manage Long COVID due to their longitudinal relationships with patients and holistic understanding of their patients' health. However, diagnostic uncertainty, time constraints, and limited access to specialty care present significant challenges, and sometimes hesitation, to addressing Long COVID in the primary care setting. This focused narrative review provides a pragmatic, primary care-focused approach for the evaluation and management of Long COVID. Using patient-centered vignettes, we first describe common clinical presentations. Next, we provide a framework for the pathophysiological mechanisms suspected to contribute to persistent symptoms after SARS-CoV-2 infection. We then present a simple approach to Long COVID diagnosis and management that leverages primary care clinicians' skillset and highlights unique aspects of Long COVID care (e.g., diagnostic workup to evaluate for competing or coexisting diagnoses; management strategies focused on validation and supportive care, including activity pacing, multidisciplinary rehabilitation, and consideration of symptom-based medication trials). We offer practical strategies to effectively, yet efficiently, address a possible Long COVID diagnosis within the context of brief primary care visits (e.g., prioritize the most bothersome or addressable symptom(s) first, focus on one or two symptoms each visit, leverage longitudinal follow-up). We conclude with evidence-based strategies for prevention counseling, including infection prevention and early outpatient treatment during acute infection. While we remain optimistic that reliable diagnostic biomarkers and curative treatments will one day be available, until then, this primer supports primary care clinicians in recognizing Long COVID and supporting their patients who are living with it, despite the constraints of our current healthcare environment.
