Long COVID: Global Underreporting and Neurological Impacts

Long COVID is significantly underreported across the globe, according to reporting from The Sick Times. This clinical syndrome is characterized by enduring neurological sequelae that affect a significant portion of survivors of SARS-CoV-2 infection.

The condition typically manifests as symptoms that persist beyond 3 to 12 weeks following the initial infection. These manifestations range from mild neurological symptoms to severe cognitive and psychiatric impairments.

Neurological and Cognitive Manifestations

Neurological disruptions associated with long COVID broadly manifest as cognitive dysfunction, chronic insomnia, fatigue, and mood dysregulation. According to a narrative review published in the Journal of Clinical Medicine in November 2022, neurocognitive and psychiatric sequelae—specifically alterations in memory and attention, as well as symptoms of anxiety and depression—have become primary targets for healthcare providers due to their significant public health impact.

Other reported neurological manifestations include headaches, hyposmia, and hypogeusia. In very rare cases, patients have developed Guillain-Barré syndrome.

Physical symptoms accompanying these neurological effects often include profound fatigue, muscle pain, and general weakness.

Diagnostic Tools and Clinical Research

To better understand the disease phenotype, medical professionals utilize various diagnostic tools to identify subtle neurological anomalies. These include:

• Magnetic Resonance Imaging (MRI)
• Positron Emission Tomography (PET)
• Electroencephalography (EEG)
• Ultrasonography

The World Health Organization updated its living guidance for the clinical management of COVID-19 in January 2021. This update incorporated a new practice statement for caring for patients experiencing persistent, new, or changing symptoms after a suspected or confirmed infection.

Despite these updates, the World Health Organization has noted that the clinical characterization of long COVID remains inadequate, indicating that further research into long-term sequelae is warranted.

Global Economic Impact

The scale of the condition extends beyond individual health to global economic stability. A study highlighted on March 23, 2026, estimated that long COVID could result in an annual global economic impact of approximately USD 1 trillion.

This figure represents roughly 1% of the global economy, reflecting the widespread nature of the syndrome and its impact on the workforce and healthcare systems.

Because of the significant public health impact, assessment tools are considered crucial for the early screening of cognitive alterations caused by the syndrome to facilitate rehabilitative approaches.