Long COVID
Persistent symptoms that continue for weeks or months after COVID-19.
Definition
Long COVID, or post-COVID syndrome, refers to a range of symptoms that persist or emerge weeks to months after a COVID-19 infection. Common features include fatigue, brain fog, shortness of breath, and post-exertional malaise. It has drawn new attention to post-viral and invisible illnesses.
The Diagnostic Journey
A typical path patients take with Long COVID — from first symptoms to living with the condition. Click each stage to expand.
Many invisible illnesses begin with vague, intermittent symptoms such as fatigue, pain, or changes in weight or mood. Because these signs are non-specific and can come and go, they are frequently attributed to stress or overwork, which is one reason diagnosis is so often delayed.
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Sources & References
This page draws on trusted, authoritative health resources. For medical decisions, always consult a qualified healthcare professional.
- FatigueMedlinePlus, U.S. National Library of MedicineGovernment Health Agency
- Autoimmune DiseasesMedlinePlus, U.S. National Library of MedicineGovernment Health Agency
- Health Topics: Trusted Consumer Health InformationMedlinePlus, U.S. National Library of MedicineGovernment Health Agency
- Health Topics A-ZMedlinePlus, U.S. National Library of MedicineGovernment Health Agency
- Health Library: Diseases & ConditionsCleveland ClinicAcademic Medical Center
Content Review
- Last Reviewed
- July 2026
- Last Updated
- July 2026
- Content Type
- Educational Documentary Companion
- Evidence Standard
- Evidence-Informed
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