Long COVID

WHO defines post-COVID-19 condition as symptoms occurring in a person with probable or confirmed SARS-CoV-2 infection, usually 3 months from symptom onset, lasting at least 2 months, and not explained by an alternative diagnosis. NICE uses post-COVID-19 syndrome for symptoms continuing beyond 12 weeks after suspected or confirmed infection that are not otherwise explained. BMJBMJLong COVID - Symptoms, diagnosis and treatment | BMJ Best Practice US

Operationally, use the prior infection and temporal relationship as context, then establish the active clinical phenotype and evaluate alternative diagnoses proportionately. Long COVID can involve respiratory, cardiovascular, hematologic, neuropsychiatric, and other manifestations; many reported symptoms are subjective and examination may be unrevealing. PubMedPubMedPostacute Coronavirus (COVID-19) Syndrome - StatPearls - NCBI Bookshelf

Do not require documented positive testing when the history supports probable infection, but do not use the syndrome label to bypass standard diagnostic pathways. Serology is not recommended to diagnose acute infection and has variable performance; it should not be used as a stand-alone confirmation of remote infection or as a test of immunity. PubMedPubMedFeatures, Evaluation, and Treatment of Coronavirus (COVID-19) - StatPearls - NCBI Bookshelf

Available guidance does not support routine blood testing or imaging for every patient with PASC. Instead, choose studies according to symptom pattern, severity, examination, pretest probability, and whether a result would change management. PubMedPubMedClinical Practice Guideline Recommendations for Post-Acute Sequelae of COVID-19

For chest pain more than 12 weeks after infection, the recommended approach is the same as for chest pain generally: prioritize emergency and serious cardiac causes, then select tests based on the clinical syndrome. Troponin and ECG may be considered, but neither should be used indiscriminately as a screening panel. PubMedPubMedClinical Practice Guideline Recommendations for Post-Acute Sequelae of COVID-19

For dyspnea, consider cardiopulmonary testing to identify pulmonary or cardiac disease. Exertional hypoxia, abnormal lung findings, elevated jugular venous pressure, tachycardia, or a pericardial rub should redirect evaluation toward specific cardiopulmonary diagnoses rather than nonspecific PASC management. PubMed+1PubMedClinical Practice Guideline Recommendations for Post-Acute Sequelae of COVID-19PubMedPostacute Coronavirus (COVID-19) Syndrome - StatPearls - NCBI Bookshelf

Management begins with treating any identified cardiopulmonary, neurologic, psychiatric, or other diagnosis using its established pathway. For residual long-COVID symptoms, available sources support symptom-directed, individualized, interdisciplinary care rather than a uniform medication regimen. PubMed+2PubMedClinical Practice Guideline Recommendations for Post-Acute Sequelae of COVID-19PubMedPostacute Coronavirus (COVID-19) Syndrome - StatPearls - NCBI BookshelfchestnetPost-COVID-19 Recovery Care: The Need for the Interprofessional Approach | COVID in Focus - American College of Chest Physicians

Rehabilitation should follow exclusion of life-threatening complications and relevant alternative diagnoses. Referral options may include physical and occupational therapy, pulmonary or cardiac rehabilitation, and speech or swallowing therapy, selected for the patient’s impairment pattern. Cardiac symptoms should be screened for before initiating an exercise program, with further cardiac evaluation when indicated. Wolters KluwerWolters KluwerAn overview of clinical presentation and... : The Nurse Practitioner

For patients whose symptoms worsen after physical or cognitive activity, do not assume deconditioning alone. WHO notes that activity-associated exacerbation or relapse can contribute to loss of confidence and work loss, and recommends that patients establish energy self-management at home before return to work. The guideline also states that direct intervention evidence for return-to-activity and work rehabilitation is lacking. WHOWHOClinical management of COVID-19: living guideline, June 2025

Long COVID has a heterogeneous, relapsing-remitting course. Estimates in a recent review suggest persistent symptoms in approximately 6.6% to 10.4% of infected individuals, although estimates vary substantially with definition, population, variant era, and ascertainment method. Wolters Kluwer+1Wolters KluwerLong COVID: current research and future directions : Infectious Diseases & ImmunityCDCPostacute Sequelae of SARS-CoV-2 in University Setting - Volume 29, Number 3—March 2023 - Emerging Infectious Diseases journal - CDC

The clinical burden is not limited to symptom counts: fatigue, palpitations, cognitive dysfunction, and dyspnea can affect work performance, social participation, and self-perception. Functional assessment should therefore be a routine outcome measure rather than an optional add-on. Wolters KluwerWolters KluwerLong COVID: current research and future directions : Infectious Diseases & Immunity

Explain that uncertainty about mechanism and treatment does not imply that symptoms are trivial. At the same time, communicate that new symptoms and changes in pattern require reassessment for non-PASC diagnoses, particularly cardiopulmonary and neurologic disease. PubMed+1PubMedClinical Practice Guideline Recommendations for Post-Acute Sequelae of COVID-19PubMedPostacute Coronavirus (COVID-19) Syndrome - StatPearls - NCBI Bookshelf