**5. Conclusions**

This review represents the first investigation of its kind into the similarities between symptoms of ME/CFS and long COVID. Based on data from early research into patients suffering from long COVID, this review study suggests many overlaps in the clinical presentation of long COVID and ME/CFS. Further studies into the pathogenesis and symptomatology of long COVID are warranted. With the ever-increasing cumulative cases of COVID-19 worldwide, and the tremendous number of patients who are currently suffering from, or will eventually develop symptoms of long COVID, similar research into long COVID and ME/CFS will be of paramount importance for years to come.

**Author Contributions:** Conceptualization, T.L.W. and D.J.W.; literature search and data analysis, T.L.W.; writing—original draft preparation, T.L.W. and D.J.W.; writing—review and editing, T.L.W. and D.J.W. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Data available upon request.

**Acknowledgments:** The authors wish to acknowledge and thank the Open Medicine Foundation for supporting the cost of publishing this article.

**Conflicts of Interest:** The authors declare no conflict of interest.
