June 2020 letter published in the peer-reviewed journal Medical Hypotheses.An estimated 836,000 to 2.5 million Americans suffer from CFS/ME, according to the U.S.
Centers for Disease Control and Prevention. About 90% of people with the illness may not have not been formally diagnosed.People with CFS/ME can be overwhelmed by extreme fatigue and are sometimes confined to their beds, according to the CDC.RELATED: Some COVID-19 survivors still have symptoms months after contracting virus, doctors don't know whyAny sort of activity, physical or mental, can also possibly exacerbate CFS/ME symptoms, causing a particular ailment known as post-exertional malaise (PEM).