Post-Exertional Malaise (PEM) is not just fatigue or feeling tired.
This is the basic starting point. And this is also why all the literature on Long Covid and Myalgic Encephalomielitis / Chronic Fatigue Syndrome (ME/CFS) based on surveys is just trash, just useless. Because a complex clinical problem like PEM (which is crucial for Long Covid and ME/CFS)…