Applying Lessons From Rheumatology to Better Understand Long COVID

Area of Science:

• Immunology
• Neurology
• Rheumatology

Background:

• Long COVID symptoms often lack evidence of organ damage or abnormal biomarkers, particularly in mild SARS-CoV-2 infections.
• Persistent symptoms in long COVID patients resemble those of fibromyalgia (FM) and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).
• Key overlapping symptoms include fatigue, post-exertional malaise, pain, and sleep/cognitive disturbances.

Purpose of the Study:

• To explore the similarities in pathophysiology between long COVID, FM, and ME/CFS.
• To highlight the potential for shared research and treatment strategies.
• To emphasize the importance of distinguishing long COVID based on organ damage presence.

Main Methods:

• Comparative analysis of pathophysiologic pathways in long COVID, FM, and ME/CFS.
• Review of existing literature on immune dysregulation and nervous system dysfunction.
• Examination of current multidisciplinary treatment approaches.

Main Results:

• Analogous pathways include host-microbial interactions, immune dysregulation, and nervous system dysfunction without systemic autoimmunity.
• Multidisciplinary management strategies used for FM and ME/CFS are being applied to long COVID.
• Long COVID patient engagement in research offers potential benefits for FM and ME/CFS communities.

Conclusions:

• Long COVID, FM, and ME/CFS share underlying pathophysiologic mechanisms, particularly in the absence of organ damage.
• Advances in long COVID research could significantly enhance understanding and treatment of FM and ME/CFS.
• Rheumatologists play a crucial role in long COVID research and patient care.